1311304152431 has 16 divisors (see below), whose sum is σ = 1641267264000. Its totient is φ = 1019930362848.

The previous prime is 1311304152427. The next prime is 1311304152449. The reversal of 1311304152431 is 1342514031131.

It is a cyclic number.

It is not a de Polignac number, because 1311304152431 - 2² = 1311304152427 is a prime.

It is a super-2 number, since 2×1311304152431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311304152394 and 1311304152403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311304152421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122112731 + ... + 122123468.

It is an arithmetic number, because the mean of its divisors is an integer number (102579204000).

Almost surely, 2^{1311304152431} is an apocalyptic number.

1311304152431 is a deficient number, since it is larger than the sum of its proper divisors (329963111569).

1311304152431 is a wasteful number, since it uses less digits than its factorization.

1311304152431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244236278.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 1311304152431 its reverse (1342514031131), we get a palindrome (2653818183562).

The spelling of 1311304152431 in words is "one trillion, three hundred eleven billion, three hundred four million, one hundred fifty-two thousand, four hundred thirty-one".