1311032402031 has 16 divisors (see below), whose sum is σ = 1958495580288. Its totient is φ = 773090359200.

The previous prime is 1311032401951. The next prime is 1311032402039. The reversal of 1311032402031 is 1302042301131.

It is not a de Polignac number, because 1311032402031 - 2²³ = 1311024013423 is a prime.

It is a super-2 number, since 2×1311032402031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311032401989 and 1311032402007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311032402039) 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, 536867085 + ... + 536869526.

It is an arithmetic number, because the mean of its divisors is an integer number (122405973768).

Almost surely, 2^{1311032402031} is an apocalyptic number.

1311032402031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311032402031 is a deficient number, since it is larger than the sum of its proper divisors (647463178257).

1311032402031 is a wasteful number, since it uses less digits than its factorization.

1311032402031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073736662.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1311032402031 its reverse (1302042301131), we get a palindrome (2613074703162).

The spelling of 1311032402031 in words is "one trillion, three hundred eleven billion, thirty-two million, four hundred two thousand, thirty-one".