1315723497 has 32 divisors (see below), whose sum is σ = 1964874240. Its totient is φ = 776208000.

The previous prime is 1315723471. The next prime is 1315723511. The reversal of 1315723497 is 7943275131.

It is not a de Polignac number, because 1315723497 - 2¹⁶ = 1315657961 is a prime.

It is a super-2 number, since 2×1315723497² = 3462256641115818018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315723447) 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, 836722 + ... + 838292.

It is an arithmetic number, because the mean of its divisors is an integer number (61402320).

Almost surely, 2^1315723497 is an apocalyptic number.

It is an amenable number.

1315723497 is a deficient number, since it is larger than the sum of its proper divisors (649150743).

1315723497 is a wasteful number, since it uses less digits than its factorization.

1315723497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245.

The product of its digits is 158760, while the sum is 42.

The square root of 1315723497 is about 36272.9030682685. The cubic root of 1315723497 is about 1095.7753929177.

The spelling of 1315723497 in words is "one billion, three hundred fifteen million, seven hundred twenty-three thousand, four hundred ninety-seven".