3131522898 has 64 divisors (see below), whose sum is σ = 7380764928. Its totient is φ = 867041280.

The previous prime is 3131522897. The next prime is 3131522917. The reversal of 3131522898 is 8982251313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (3131522897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395458 + ... + 403298.

It is an arithmetic number, because the mean of its divisors is an integer number (115324452).

Almost surely, 2^3131522898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131522898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3690382464).

3131522898 is an abundant number, since it is smaller than the sum of its proper divisors (4249242030).

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

3131522898 is a wasteful number, since it uses less digits than its factorization.

3131522898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8147.

The product of its digits is 103680, while the sum is 42.

The square root of 3131522898 is about 55960.0115975685. The cubic root of 3131522898 is about 1463.0253925328.

The spelling of 3131522898 in words is "three billion, one hundred thirty-one million, five hundred twenty-two thousand, eight hundred ninety-eight".