Search a number
-
+
231241302 = 23229442991
BaseRepresentation
bin11011100100001…
…11011001010110
3121010010021102200
431302013121112
5433144210202
634540145330
75505342615
oct1562073126
9533107380
10231241302
11109591016
1265538246
1338ba5296
14229d587c
151547ae1c
hexdc87656

231241302 has 24 divisors (see below), whose sum is σ = 518300640. Its totient is φ = 74422320.

The previous prime is 231241291. The next prime is 231241337. The reversal of 231241302 is 203142132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220974 + ... + 222017.

It is an arithmetic number, because the mean of its divisors is an integer number (21595860).

Almost surely, 2231241302 is an apocalyptic number.

231241302 is an abundant number, since it is smaller than the sum of its proper divisors (287059338).

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

231241302 is a wasteful number, since it uses less digits than its factorization.

231241302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443028 (or 443025 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231241302 is about 15206.6203345780. The cubic root of 231241302 is about 613.7928173789.

Adding to 231241302 its reverse (203142132), we get a palindrome (434383434).

The spelling of 231241302 in words is "two hundred thirty-one million, two hundred forty-one thousand, three hundred two".

Divisors: 1 2 3 6 9 18 29 58 87 174 261 522 442991 885982 1328973 2657946 3986919 7973838 12846739 25693478 38540217 77080434 115620651 231241302