31075497909 has 8 divisors (see below), whose sum is σ = 46037774720. Its totient is φ = 20716998588.

The previous prime is 31075497863. The next prime is 31075497923. The reversal of 31075497909 is 90979457013.

It is a happy number.

31075497909 is a `hidden beast` number, since 3 + 1 + 0 + 7 + 549 + 7 + 90 + 9 = 666.

It is not a de Polignac number, because 31075497909 - 2³² = 26780530613 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 (31075497949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575472157 + ... + 575472210.

It is an arithmetic number, because the mean of its divisors is an integer number (5754721840).

Almost surely, 2^31075497909 is an apocalyptic number.

It is an amenable number.

31075497909 is a deficient number, since it is larger than the sum of its proper divisors (14962276811).

31075497909 is a wasteful number, since it uses less digits than its factorization.

31075497909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150944376 (or 1150944370 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The spelling of 31075497909 in words is "thirty-one billion, seventy-five million, four hundred ninety-seven thousand, nine hundred nine".