31311213001 has 8 divisors (see below), whose sum is σ = 34392179520. Its totient is φ = 28373547312.

The previous prime is 31311212957. The next prime is 31311213019. The reversal of 31311213001 is 10031211313.

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 31311213001 - 2²⁵ = 31277658569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31311213041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35824750 + ... + 35825623.

It is an arithmetic number, because the mean of its divisors is an integer number (4299022440).

Almost surely, 2^31311213001 is an apocalyptic number.

It is an amenable number.

31311213001 is a deficient number, since it is larger than the sum of its proper divisors (3080966519).

31311213001 is a wasteful number, since it uses less digits than its factorization.

31311213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71650415.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31311213001 its reverse (10031211313), we get a palindrome (41342424314).

The spelling of 31311213001 in words is "thirty-one billion, three hundred eleven million, two hundred thirteen thousand, one".