3131831011204 has 81 divisors (see below), whose sum is σ = 6729738688197. Its totient is φ = 1271379358368.

The previous prime is 3131831011189. The next prime is 3131831011241. The reversal of 3131831011204 is 4021101381313.

The square root of 3131831011204 is 1769698.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 75795596100 + 3056035415104 = 275310^2 + 1748152^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 470736342 + ... + 470742994.

Almost surely, 2^{3131831011204} is an apocalyptic number.

3131831011204 is the 1769698-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131831011204

3131831011204 is an abundant number, since it is smaller than the sum of its proper divisors (3597907676993).

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

3131831011204 is an frugal number, since it uses more digits than its factorization.

3131831011204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13362 (or 6681 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 3131831011204 its reverse (4021101381313), we get a palindrome (7152932392517).

The spelling of 3131831011204 in words is "three trillion, one hundred thirty-one billion, eight hundred thirty-one million, eleven thousand, two hundred four".