31400013404131 has 4 divisors (see below), whose sum is σ = 31522192444872. Its totient is φ = 31277834363392.

The previous prime is 31400013404083. The next prime is 31400013404171. The reversal of 31400013404131 is 13140431000413.

It is a happy number.

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 31400013404131 - 2¹⁷ = 31400013273059 is a prime.

It is a super-2 number, since 2×31400013404131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31400013404096 and 31400013404105.

It is not an unprimeable number, because it can be changed into a prime (31400013404171) 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, 61089519985 + ... + 61089520498.

It is an arithmetic number, because the mean of its divisors is an integer number (7880548111218).

Almost surely, 2^{31400013404131} is an apocalyptic number.

31400013404131 is a deficient number, since it is larger than the sum of its proper divisors (122179040741).

31400013404131 is a wasteful number, since it uses less digits than its factorization.

31400013404131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122179040740.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31400013404131 its reverse (13140431000413), we get a palindrome (44540444404544).

The spelling of 31400013404131 in words is "thirty-one trillion, four hundred billion, thirteen million, four hundred four thousand, one hundred thirty-one".