3121131432 has 16 divisors (see below), whose sum is σ = 7802828640. Its totient is φ = 1040377136.

The previous prime is 3121131427. The next prime is 3121131451. The reversal of 3121131432 is 2341311213.

It is a super-2 number, since 2×3121131432² = 19482922831636741248, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3121131399 and 3121131408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65023548 + ... + 65023595.

It is an arithmetic number, because the mean of its divisors is an integer number (487676790).

Almost surely, 2^3121131432 is an apocalyptic number.

It is an amenable number.

3121131432 is an abundant number, since it is smaller than the sum of its proper divisors (4681697208).

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

3121131432 is a wasteful number, since it uses less digits than its factorization.

3121131432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130047152 (or 130047148 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 3121131432 is about 55867.0871980990. The cubic root of 3121131432 is about 1461.4053260433.

Adding to 3121131432 its reverse (2341311213), we get a palindrome (5462442645).

The spelling of 3121131432 in words is "three billion, one hundred twenty-one million, one hundred thirty-one thousand, four hundred thirty-two".