3131545506 has 16 divisors (see below), whose sum is σ = 6266450304. Its totient is φ = 1043288624.

The previous prime is 3131545481. The next prime is 3131545513. The reversal of 3131545506 is 6055451313.

It is a super-2 number, since 2×3131545506² = 19613154512297592072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127770 + ... + 150293.

It is an arithmetic number, because the mean of its divisors is an integer number (391653144).

Almost surely, 2^3131545506 is an apocalyptic number.

3131545506 is an abundant number, since it is smaller than the sum of its proper divisors (3134904798).

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

3131545506 is a wasteful number, since it uses less digits than its factorization.

3131545506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279945.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 3131545506 is about 55960.2135985916. The cubic root of 3131545506 is about 1463.0289132903.

Adding to 3131545506 its reverse (6055451313), we get a palindrome (9186996819).

The spelling of 3131545506 in words is "three billion, one hundred thirty-one million, five hundred forty-five thousand, five hundred six".