31213340443130 has 8 divisors (see below), whose sum is σ = 56184012797652. Its totient is φ = 12485336177248.

The previous prime is 31213340443111. The next prime is 31213340443139. The reversal of 31213340443130 is 3134404331213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30354843687529 + 858496755601 = 5509523^2 + 926551^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31213340443139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560667022147 + ... + 1560667022166.

Almost surely, 2^{31213340443130} is an apocalyptic number.

31213340443130 is a deficient number, since it is larger than the sum of its proper divisors (24970672354522).

31213340443130 is a wasteful number, since it uses less digits than its factorization.

31213340443130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121334044320.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 31213340443130 its reverse (3134404331213), we get a palindrome (34347744774343).

The spelling of 31213340443130 in words is "thirty-one trillion, two hundred thirteen billion, three hundred forty million, four hundred forty-three thousand, one hundred thirty".