1311142552 has 16 divisors (see below), whose sum is σ = 2459566440. Its totient is φ = 655258176.

The previous prime is 1311142537. The next prime is 1311142589. The reversal of 1311142552 is 2552411131.

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, 20838 + ... + 55285.

Almost surely, 2^1311142552 is an apocalyptic number.

It is an amenable number.

1311142552 is a deficient number, since it is larger than the sum of its proper divisors (1148423888).

1311142552 is a wasteful number, since it uses less digits than its factorization.

1311142552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78282 (or 78278 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1311142552 is about 36209.7024566621. The cubic root of 1311142552 is about 1094.5021963881.

Adding to 1311142552 its reverse (2552411131), we get a palindrome (3863553683).

The spelling of 1311142552 in words is "one billion, three hundred eleven million, one hundred forty-two thousand, five hundred fifty-two".