31142052556551 has 24 divisors (see below), whose sum is σ = 48916292418864. Its totient is φ = 19012000285440.

The previous prime is 31142052556507. The next prime is 31142052556583. The reversal of 31142052556551 is 15565525024113.

31142052556551 is a `hidden beast` number, since 3 + 1 + 1 + 4 + 20 + 5 + 25 + 56 + 551 = 666.

It is not a de Polignac number, because 31142052556551 - 2⁶ = 31142052556487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31142052556497 and 31142052556506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142052556751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2750573085 + ... + 2750584406.

It is an arithmetic number, because the mean of its divisors is an integer number (2038178850786).

Almost surely, 2^{31142052556551} is an apocalyptic number.

31142052556551 is a deficient number, since it is larger than the sum of its proper divisors (17774239862313).

31142052556551 is a wasteful number, since it uses less digits than its factorization.

31142052556551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501157551 (or 5501157548 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The spelling of 31142052556551 in words is "thirty-one trillion, one hundred forty-two billion, fifty-two million, five hundred fifty-six thousand, five hundred fifty-one".