31140665545 has 8 divisors (see below), whose sum is σ = 40765962240. Its totient is φ = 22647756720.

The previous prime is 31140665527. The next prime is 31140665561. The reversal of 31140665545 is 54556604113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31140665545 - 2⁵ = 31140665513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31140665498 and 31140665507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283096905 + ... + 283097014.

It is an arithmetic number, because the mean of its divisors is an integer number (5095745280).

Almost surely, 2^31140665545 is an apocalyptic number.

It is an amenable number.

31140665545 is a deficient number, since it is larger than the sum of its proper divisors (9625296695).

31140665545 is a wasteful number, since it uses less digits than its factorization.

31140665545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566193935.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 31140665545 in words is "thirty-one billion, one hundred forty million, six hundred sixty-five thousand, five hundred forty-five".