3121042400030 has 32 divisors (see below), whose sum is σ = 5620713465600. Its totient is φ = 1247786675712.

The previous prime is 3121042400023. The next prime is 3121042400039. The reversal of 3121042400030 is 300042401213.

It is a junction number, because it is equal to n+sod(n) for n = 3121042399975 and 3121042400011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121042400039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209754131 + ... + 209769009.

It is an arithmetic number, because the mean of its divisors is an integer number (175647295800).

Almost surely, 2^{3121042400030} is an apocalyptic number.

3121042400030 is a deficient number, since it is larger than the sum of its proper divisors (2499671065570).

3121042400030 is a wasteful number, since it uses less digits than its factorization.

3121042400030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24068.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 3121042400030 its reverse (300042401213), we get a palindrome (3421084801243).

The spelling of 3121042400030 in words is "three trillion, one hundred twenty-one billion, forty-two million, four hundred thousand, thirty".