31117677481 has 16 divisors (see below), whose sum is σ = 35739187200. Its totient is φ = 26795437200.

The previous prime is 31117677473. The next prime is 31117677499. The reversal of 31117677481 is 18477671113.

It is a cyclic number.

It is not a de Polignac number, because 31117677481 - 2³ = 31117677473 is a prime.

It is a super-2 number, since 2×31117677481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31117677401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2090736 + ... + 2105566.

It is an arithmetic number, because the mean of its divisors is an integer number (2233699200).

Almost surely, 2^31117677481 is an apocalyptic number.

It is an amenable number.

31117677481 is a deficient number, since it is larger than the sum of its proper divisors (4621509719).

31117677481 is a wasteful number, since it uses less digits than its factorization.

31117677481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24900.

The product of its digits is 197568, while the sum is 46.

The spelling of 31117677481 in words is "thirty-one billion, one hundred seventeen million, six hundred seventy-seven thousand, four hundred eighty-one".