3121240540315 has 8 divisors (see below), whose sum is σ = 3745619339040. Its totient is φ = 2496905305152.

The previous prime is 3121240540303. The next prime is 3121240540339. The reversal of 3121240540315 is 5130450421213.

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 3121240540315 - 2⁵ = 3121240540283 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10733055 + ... + 11020024.

It is an arithmetic number, because the mean of its divisors is an integer number (468202417380).

Almost surely, 2^{3121240540315} is an apocalyptic number.

3121240540315 is a deficient number, since it is larger than the sum of its proper divisors (624378798725).

3121240540315 is a wasteful number, since it uses less digits than its factorization.

3121240540315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21781781.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 3121240540315 its reverse (5130450421213), we get a palindrome (8251690961528).

The spelling of 3121240540315 in words is "three trillion, one hundred twenty-one billion, two hundred forty million, five hundred forty thousand, three hundred fifteen".