Search a number
-
+
231403080 = 23351928359
BaseRepresentation
bin11011100101011…
…10111001001000
3121010102111100110
431302232321020
5433214344310
634543434320
75506615356
oct1562567110
9533374313
10231403080
11109691617
12655b59a0
1338c30acc
1422a387d6
15154add20
hexdcaee48

231403080 has 32 divisors (see below), whose sum is σ = 694209600. Its totient is φ = 61707456.

The previous prime is 231403079. The next prime is 231403153. The reversal of 231403080 is 80304132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964060 + ... + 964299.

It is an arithmetic number, because the mean of its divisors is an integer number (21694050).

Almost surely, 2231403080 is an apocalyptic number.

231403080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231403080 is an abundant number, since it is smaller than the sum of its proper divisors (462806520).

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

231403080 is a wasteful number, since it uses less digits than its factorization.

231403080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928373 (or 1928369 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 231403080 is about 15211.9387324562. The cubic root of 231403080 is about 613.9359218993.

The spelling of 231403080 in words is "two hundred thirty-one million, four hundred three thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1928359 3856718 5785077 7713436 9641795 11570154 15426872 19283590 23140308 28925385 38567180 46280616 57850770 77134360 115701540 231403080