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30431001232 = 2417111878681
BaseRepresentation
bin11100010101110101…
…000011101010010000
32220112210022000220201
4130111311003222100
5444310314014412
621551345544544
72125052146132
oct342565035220
986483260821
1030431001232
11119a65636a5
125a93345154
132b3c76c308
14168979d052
15bd18b2e57
hex715d43a90

30431001232 has 20 divisors (see below), whose sum is σ = 62428304556. Its totient is φ = 14320471040.

The previous prime is 30431001197. The next prime is 30431001269. The reversal of 30431001232 is 23210013403.

It can be written as a sum of positive squares in 2 ways, for example, as 18345077136 + 12085924096 = 135444^2 + 109936^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55939069 + ... + 55939612.

Almost surely, 230431001232 is an apocalyptic number.

It is an amenable number.

30431001232 is an abundant number, since it is smaller than the sum of its proper divisors (31997303324).

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

30431001232 is a wasteful number, since it uses less digits than its factorization.

30431001232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111878706 (or 111878700 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30431001232 its reverse (23210013403), we get a palindrome (53641014635).

The spelling of 30431001232 in words is "thirty billion, four hundred thirty-one million, one thousand, two hundred thirty-two".

Divisors: 1 2 4 8 16 17 34 68 136 272 111878681 223757362 447514724 895029448 1790058896 1901937577 3803875154 7607750308 15215500616 30431001232