3121133452545 has 32 divisors (see below), whose sum is σ = 5118086633472. Its totient is φ = 1623430441152.

The previous prime is 3121133452537. The next prime is 3121133452559. The reversal of 3121133452545 is 5452543311213.

It is not a de Polignac number, because 3121133452545 - 2³ = 3121133452537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7622287 + ... + 8021316.

It is an arithmetic number, because the mean of its divisors is an integer number (159940207296).

Almost surely, 2^{3121133452545} is an apocalyptic number.

It is an amenable number.

3121133452545 is a deficient number, since it is larger than the sum of its proper divisors (1996953180927).

3121133452545 is a wasteful number, since it uses less digits than its factorization.

3121133452545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15643941.

The product of its digits is 216000, while the sum is 39.

Adding to 3121133452545 its reverse (5452543311213), we get a palindrome (8573676763758).

The spelling of 3121133452545 in words is "three trillion, one hundred twenty-one billion, one hundred thirty-three million, four hundred fifty-two thousand, five hundred forty-five".