31527641042 has 4 divisors (see below), whose sum is σ = 47291461566. Its totient is φ = 15763820520.

The previous prime is 31527641027. The next prime is 31527641053. The reversal of 31527641042 is 24014672513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22725261001 + 8802380041 = 150749^2 + 93821^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31527640993 and 31527641011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7881910259 + ... + 7881910262.

Almost surely, 2^31527641042 is an apocalyptic number.

31527641042 is a deficient number, since it is larger than the sum of its proper divisors (15763820524).

31527641042 is a wasteful number, since it uses less digits than its factorization.

31527641042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15763820523.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 31527641042 in words is "thirty-one billion, five hundred twenty-seven million, six hundred forty-one thousand, forty-two".