31136504522 has 4 divisors (see below), whose sum is σ = 46704756786. Its totient is φ = 15568252260.

The previous prime is 31136504519. The next prime is 31136504533. The reversal of 31136504522 is 22540563113.

It is a happy number.

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., 19310159521 + 11826345001 = 138961^2 + 108749^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7784126129 + ... + 7784126132.

Almost surely, 2^31136504522 is an apocalyptic number.

31136504522 is a deficient number, since it is larger than the sum of its proper divisors (15568252264).

31136504522 is a wasteful number, since it uses less digits than its factorization.

31136504522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15568252263.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 31136504522 in words is "thirty-one billion, one hundred thirty-six million, five hundred four thousand, five hundred twenty-two".