31261416213 has 16 divisors (see below), whose sum is σ = 42740139456. Its totient is φ = 20317866240.

The previous prime is 31261416209. The next prime is 31261416239.

31261416213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31261416213 - 2² = 31261416209 is a prime.

It is a super-2 number, since 2×31261416213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31261416293) 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 15 ways as a sum of consecutive naturals, for example, 735195 + ... + 776552.

It is an arithmetic number, because the mean of its divisors is an integer number (2671258716).

Almost surely, 2^31261416213 is an apocalyptic number.

It is an amenable number.

31261416213 is a deficient number, since it is larger than the sum of its proper divisors (11478723243).

31261416213 is a wasteful number, since it uses less digits than its factorization.

31261416213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511924.

The product of its digits is 5184, while the sum is 30.

The spelling of 31261416213 in words is "thirty-one billion, two hundred sixty-one million, four hundred sixteen thousand, two hundred thirteen".