3131472628 has 6 divisors (see below), whose sum is σ = 5480077106. Its totient is φ = 1565736312.

The previous prime is 3131472583. The next prime is 3131472647. The reversal of 3131472628 is 8262741313.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2951966224 + 179506404 = 54332^2 + 13398^2 .

It is a super-2 number, since 2×3131472628² = 19612241639826452768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 391434075 + ... + 391434082.

Almost surely, 2^3131472628 is an apocalyptic number.

It is an amenable number.

3131472628 is a deficient number, since it is larger than the sum of its proper divisors (2348604478).

3131472628 is a wasteful number, since it uses less digits than its factorization.

3131472628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782868161 (or 782868159 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 3131472628 is about 55959.5624357446. The cubic root of 3131472628 is about 1463.0175638945.

The spelling of 3131472628 in words is "three billion, one hundred thirty-one million, four hundred seventy-two thousand, six hundred twenty-eight".