3121615346613 has 4 divisors (see below), whose sum is σ = 4162153795488. Its totient is φ = 2081076897740.

The previous prime is 3121615346609. The next prime is 3121615346627. The reversal of 3121615346613 is 3166435161213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3121615346613 - 2² = 3121615346609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121615341613) 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, 520269224433 + ... + 520269224438.

It is an arithmetic number, because the mean of its divisors is an integer number (1040538448872).

Almost surely, 2^{3121615346613} is an apocalyptic number.

It is an amenable number.

3121615346613 is a deficient number, since it is larger than the sum of its proper divisors (1040538448875).

3121615346613 is a wasteful number, since it uses less digits than its factorization.

3121615346613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040538448874.

The product of its digits is 233280, while the sum is 42.

The spelling of 3121615346613 in words is "three trillion, one hundred twenty-one billion, six hundred fifteen million, three hundred forty-six thousand, six hundred thirteen".