31311012033197 has 8 divisors (see below), whose sum is σ = 33750289404216. Its totient is φ = 28876125802752.

The previous prime is 31311012033149. The next prime is 31311012033229. The reversal of 31311012033197 is 79133021011313.

It can be written as a sum of positive squares in 4 ways, for example, as 698981274601 + 30612030758596 = 836051^2 + 5532814^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31311012033197 - 2¹⁴ = 31311012016813 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 (31311012033397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097770328 + ... + 1097798849.

It is an arithmetic number, because the mean of its divisors is an integer number (4218786175527).

Almost surely, 2^{31311012033197} is an apocalyptic number.

It is an amenable number.

31311012033197 is a deficient number, since it is larger than the sum of its proper divisors (2439277371019).

31311012033197 is a wasteful number, since it uses less digits than its factorization.

31311012033197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195570287.

The product of its (nonzero) digits is 10206, while the sum is 35.

The spelling of 31311012033197 in words is "thirty-one trillion, three hundred eleven billion, twelve million, thirty-three thousand, one hundred ninety-seven".