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231456030 = 235135411097
BaseRepresentation
bin11011100101110…
…11110100011110
3121010112011222120
431302323310132
5433223043110
634544523410
75510225631
oct1562736436
9533464876
10231456030
11109718383
1265620566
1338c4bc40
1422a4dc18
15154be870
hexdcbbd1e

231456030 has 64 divisors (see below), whose sum is σ = 599876928. Its totient is φ = 56816640.

The previous prime is 231456023. The next prime is 231456031. The reversal of 231456030 is 30654132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231456031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210442 + ... + 211538.

It is an arithmetic number, because the mean of its divisors is an integer number (9373077).

Almost surely, 2231456030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231456030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299938464).

231456030 is an abundant number, since it is smaller than the sum of its proper divisors (368420898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231456030 is a wasteful number, since it uses less digits than its factorization.

231456030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 231456030 is about 15213.6790422304. The cubic root of 231456030 is about 613.9827455743.

The spelling of 231456030 in words is "two hundred thirty-one million, four hundred fifty-six thousand, thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 541 1082 1097 1623 2194 2705 3246 3291 5410 5485 6582 7033 8115 10970 14066 14261 16230 16455 21099 28522 32910 35165 42198 42783 70330 71305 85566 105495 142610 210990 213915 427830 593477 1186954 1780431 2967385 3560862 5934770 7715201 8902155 15430402 17804310 23145603 38576005 46291206 77152010 115728015 231456030