1331302131 has 12 divisors (see below), whose sum is σ = 1923720552. Its totient is φ = 887198496.

The previous prime is 1331302121. The next prime is 1331302153. The reversal of 1331302131 is 1312031331.

It is a happy number.

1331302131 is a `hidden beast` number, since 1 + 331 + 302 + 1 + 31 = 666.

It is not a de Polignac number, because 1331302131 - 2¹⁷ = 1331171059 is a prime.

It is a super-2 number, since 2×1331302131² = 3544730728010282322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1331302111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1641 + ... + 51626.

It is an arithmetic number, because the mean of its divisors is an integer number (160310046).

Almost surely, 2^1331302131 is an apocalyptic number.

1331302131 is a deficient number, since it is larger than the sum of its proper divisors (592418421).

1331302131 is a wasteful number, since it uses less digits than its factorization.

1331302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56050 (or 56047 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1331302131 is about 36487.0131827750. The cubic root of 1331302131 is about 1100.0832253835.

Adding to 1331302131 its reverse (1312031331), we get a palindrome (2643333462).

The spelling of 1331302131 in words is "one billion, three hundred thirty-one million, three hundred two thousand, one hundred thirty-one".