1345131472 has 20 divisors (see below), whose sum is σ = 2623688100. Its totient is φ = 668050688.

The previous prime is 1345131427. The next prime is 1345131481. The reversal of 1345131472 is 2741315431.

It can be written as a sum of positive squares in 2 ways, for example, as 244484496 + 1100646976 = 15636^2 + 33176^2 .

It is a congruent number.

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, 279733 + ... + 284500.

It is an arithmetic number, because the mean of its divisors is an integer number (131184405).

Almost surely, 2^1345131472 is an apocalyptic number.

It is an amenable number.

1345131472 is a deficient number, since it is larger than the sum of its proper divisors (1278556628).

1345131472 is a wasteful number, since it uses less digits than its factorization.

1345131472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564390 (or 564384 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 1345131472 is about 36676.0340276863. The cubic root of 1345131472 is about 1103.8792707369.

The spelling of 1345131472 in words is "one billion, three hundred forty-five million, one hundred thirty-one thousand, four hundred seventy-two".