31151550551 has 8 divisors (see below), whose sum is σ = 34264366608. Its totient is φ = 28319590200.

The previous prime is 31151550539. The next prime is 31151550553. The reversal of 31151550551 is 15505515113.

It is not a de Polignac number, because 31151550551 - 2⁶ = 31151550487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31151550553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11700980 + ... + 11703641.

It is an arithmetic number, because the mean of its divisors is an integer number (4283045826).

Almost surely, 2^31151550551 is an apocalyptic number.

31151550551 is a deficient number, since it is larger than the sum of its proper divisors (3112816057).

31151550551 is an equidigital number, since it uses as much as digits as its factorization.

31151550551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23404654 (or 23404632 counting only the distinct ones).

The product of its (nonzero) digits is 9375, while the sum is 32.

The spelling of 31151550551 in words is "thirty-one billion, one hundred fifty-one million, five hundred fifty thousand, five hundred fifty-one".