3121122453140 has 24 divisors (see below), whose sum is σ = 6939907573032. Its totient is φ = 1175010805760.

The previous prime is 3121122453131. The next prime is 3121122453149. The reversal of 3121122453140 is 413542211213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3121122453131) and next prime (3121122453149).

It can be written as a sum of positive squares in 4 ways, for example, as 480146441476 + 2640976011664 = 692926^2 + 1625108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121122453149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4589885621 + ... + 4589886300.

It is an arithmetic number, because the mean of its divisors is an integer number (289162815543).

Almost surely, 2^{3121122453140} is an apocalyptic number.

It is an amenable number.

3121122453140 is an abundant number, since it is smaller than the sum of its proper divisors (3818785119892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121122453140 is a wasteful number, since it uses less digits than its factorization.

3121122453140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9179771947 (or 9179771945 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 3121122453140 its reverse (413542211213), we get a palindrome (3534664664353).

The spelling of 3121122453140 in words is "three trillion, one hundred twenty-one billion, one hundred twenty-two million, four hundred fifty-three thousand, one hundred forty".