1317152031 has 32 divisors (see below), whose sum is σ = 1911349440. Its totient is φ = 806787072.

The previous prime is 1317151987. The next prime is 1317152051. The reversal of 1317152031 is 1302517131.

It is a happy number.

It is not a de Polignac number, because 1317152031 - 2¹¹ = 1317149983 is a prime.

It is a super-2 number, since 2×1317152031² = 3469778945534849922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1317151992 and 1317152010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317152051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2220871 + ... + 2221463.

It is an arithmetic number, because the mean of its divisors is an integer number (59729670).

Almost surely, 2^1317152031 is an apocalyptic number.

1317152031 is a deficient number, since it is larger than the sum of its proper divisors (594197409).

1317152031 is an equidigital number, since it uses as much as digits as its factorization.

1317152031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 1317152031 is about 36292.5892022049. The cubic root of 1317152031 is about 1096.1718253060.

Adding to 1317152031 its reverse (1302517131), we get a palindrome (2619669162).

The spelling of 1317152031 in words is "one billion, three hundred seventeen million, one hundred fifty-two thousand, thirty-one".