31697030497 has 16 divisors (see below), whose sum is σ = 36423241920. Its totient is φ = 27280324800.

The previous prime is 31697030489. The next prime is 31697030539. The reversal of 31697030497 is 79403079613.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31697030497 - 2³ = 31697030489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31697030497.

It is not an unprimeable number, because it can be changed into a prime (31697030437) 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, 261247 + ... + 362827.

It is an arithmetic number, because the mean of its divisors is an integer number (2276452620).

Almost surely, 2^31697030497 is an apocalyptic number.

It is an amenable number.

31697030497 is a deficient number, since it is larger than the sum of its proper divisors (4726211423).

31697030497 is a wasteful number, since it uses less digits than its factorization.

31697030497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103104.

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 31697030497 in words is "thirty-one billion, six hundred ninety-seven million, thirty thousand, four hundred ninety-seven".