31838626545 has 96 divisors (see below), whose sum is σ = 59431107456. Its totient is φ = 14493726720.

The previous prime is 31838626543. The next prime is 31838626643. The reversal of 31838626545 is 54562683813.

It is not a de Polignac number, because 31838626545 - 2¹ = 31838626543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (31838626543) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16136179 + ... + 16138151.

It is an arithmetic number, because the mean of its divisors is an integer number (619074036).

Almost surely, 2^31838626545 is an apocalyptic number.

It is an amenable number.

31838626545 is a deficient number, since it is larger than the sum of its proper divisors (27592480911).

31838626545 is a wasteful number, since it uses less digits than its factorization.

31838626545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543 (or 2532 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 51.

The spelling of 31838626545 in words is "thirty-one billion, eight hundred thirty-eight million, six hundred twenty-six thousand, five hundred forty-five".