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23131019962 = 229398810689
BaseRepresentation
bin10101100010101101…
…110101101010111010
32012201001002120012001
4111202231311222322
5334333020114322
614343134011214
71446131265661
oct254255655272
965631076161
1023131019962
11989a948726
124596646b0a
132248273c7b
141196075dd8
15905a90827
hex562b75aba

23131019962 has 8 divisors (see below), whose sum is σ = 35892962100. Its totient is φ = 11166699264.

The previous prime is 23131019953. The next prime is 23131019963. The reversal of 23131019962 is 26991013132.

It can be written as a sum of positive squares in 2 ways, for example, as 19838440801 + 3292579161 = 140849^2 + 57381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (23131019963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199405287 + ... + 199405402.

Almost surely, 223131019962 is an apocalyptic number.

23131019962 is a deficient number, since it is larger than the sum of its proper divisors (12761942138).

23131019962 is a wasteful number, since it uses less digits than its factorization.

23131019962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398810720.

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 23131019962 in words is "twenty-three billion, one hundred thirty-one million, nineteen thousand, nine hundred sixty-two".

Divisors: 1 2 29 58 398810689 797621378 11565509981 23131019962