1315421031 has 8 divisors (see below), whose sum is σ = 1757734384. Its totient is φ = 875027520.

The previous prime is 1315421017. The next prime is 1315421039. The reversal of 1315421031 is 1301245131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1315421031 - 2⁷ = 1315420903 is a prime.

It is a super-2 number, since 2×1315421031² = 3460664977594205922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315420989 and 1315421007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315421039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478360 + ... + 481101.

It is an arithmetic number, because the mean of its divisors is an integer number (219716798).

Almost surely, 2^1315421031 is an apocalyptic number.

1315421031 is a deficient number, since it is larger than the sum of its proper divisors (442313353).

1315421031 is an equidigital number, since it uses as much as digits as its factorization.

1315421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959921.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1315421031 is about 36268.7335180042. The cubic root of 1315421031 is about 1095.6914187896.

Adding to 1315421031 its reverse (1301245131), we get a palindrome (2616666162).

The spelling of 1315421031 in words is "one billion, three hundred fifteen million, four hundred twenty-one thousand, thirty-one".