1310011231 has 4 divisors (see below), whose sum is σ = 1310223600. Its totient is φ = 1309798864.

The previous prime is 1310011201. The next prime is 1310011243. The reversal of 1310011231 is 1321100131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1310011231 - 2⁹ = 1310010719 is a prime.

It is a super-2 number, since 2×1310011231² = 3432258850692270722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310011201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96646 + ... + 109363.

It is an arithmetic number, because the mean of its divisors is an integer number (327555900).

Almost surely, 2^1310011231 is an apocalyptic number.

1310011231 is a deficient number, since it is larger than the sum of its proper divisors (212369).

1310011231 is an equidigital number, since it uses as much as digits as its factorization.

1310011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212368.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1310011231 is about 36194.0772917338. The cubic root of 1310011231 is about 1094.1873082713.

Adding to 1310011231 its reverse (1321100131), we get a palindrome (2631111362).

Subtracting 1310011231 from its reverse (1321100131), we obtain a square (11088900 = 3330²).

The spelling of 1310011231 in words is "one billion, three hundred ten million, eleven thousand, two hundred thirty-one".