1311010123331 has 4 divisors (see below), whose sum is σ = 1311022687200. Its totient is φ = 1310997559464.

The previous prime is 1311010123321. The next prime is 1311010123337. The reversal of 1311010123331 is 1333210101131.

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 1311010123331 - 2³⁸ = 1036132216387 is a prime.

It is a super-2 number, since 2×1311010123331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311010123337) 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, 6124091 + ... + 6334548.

It is an arithmetic number, because the mean of its divisors is an integer number (327755671800).

Almost surely, 2^{1311010123331} is an apocalyptic number.

1311010123331 is a deficient number, since it is larger than the sum of its proper divisors (12563869).

1311010123331 is a wasteful number, since it uses less digits than its factorization.

1311010123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563868.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1311010123331 its reverse (1333210101131), we get a palindrome (2644220224462).

It can be divided in two parts, 1311010 and 123331, that added together give a palindrome (1434341).

The spelling of 1311010123331 in words is "one trillion, three hundred eleven billion, ten million, one hundred twenty-three thousand, three hundred thirty-one".