31304036397 has 8 divisors (see below), whose sum is σ = 43935489760. Its totient is φ = 19770970320.

The previous prime is 31304036371. The next prime is 31304036411. The reversal of 31304036397 is 79363040313.

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 31304036397 - 2¹² = 31304032301 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 (31304036327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274596754 + ... + 274596867.

It is an arithmetic number, because the mean of its divisors is an integer number (5491936220).

Almost surely, 2^31304036397 is an apocalyptic number.

It is an amenable number.

31304036397 is a deficient number, since it is larger than the sum of its proper divisors (12631453363).

31304036397 is a wasteful number, since it uses less digits than its factorization.

31304036397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549193643.

The product of its (nonzero) digits is 122472, while the sum is 39.

The spelling of 31304036397 in words is "thirty-one billion, three hundred four million, thirty-six thousand, three hundred ninety-seven".