1312230031 has 8 divisors (see below), whose sum is σ = 1548068864. Its totient is φ = 1088485560.

The previous prime is 1312230001. The next prime is 1312230043. The reversal of 1312230031 is 1300322131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312230031 - 2⁵ = 1312229999 is a prime.

It is a super-2 number, since 2×1312230031² = 3443895308516521922, 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 = 1312229987 and 1312230014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312230001) 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, 3023355 + ... + 3023788.

It is an arithmetic number, because the mean of its divisors is an integer number (193508608).

Almost surely, 2^1312230031 is an apocalyptic number.

1312230031 is a deficient number, since it is larger than the sum of its proper divisors (235838833).

1312230031 is an equidigital number, since it uses as much as digits as its factorization.

1312230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6047181.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1312230031 is about 36224.7157476770. The cubic root of 1312230031 is about 1094.8047109734.

Adding to 1312230031 its reverse (1300322131), we get a palindrome (2612552162).

The spelling of 1312230031 in words is "one billion, three hundred twelve million, two hundred thirty thousand, thirty-one".