1311640294902 has 32 divisors (see below), whose sum is σ = 3000019244544. Its totient is φ = 374506334400.

The previous prime is 1311640294883. The next prime is 1311640294903. The reversal of 1311640294902 is 2094920461131.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311640294903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10270599 + ... + 10397522.

It is an arithmetic number, because the mean of its divisors is an integer number (93750601392).

Almost surely, 2^{1311640294902} is an apocalyptic number.

1311640294902 is an abundant number, since it is smaller than the sum of its proper divisors (1688378949642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311640294902 is a wasteful number, since it uses less digits than its factorization.

1311640294902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20669644.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 1311640294902 in words is "one trillion, three hundred eleven billion, six hundred forty million, two hundred ninety-four thousand, nine hundred two".