31401424412331 has 4 divisors (see below), whose sum is σ = 41868565883112. Its totient is φ = 20934282941552.

The previous prime is 31401424412317. The next prime is 31401424412357. The reversal of 31401424412331 is 13321442410413.

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 31401424412331 - 2⁴³ = 22605331390123 is a prime.

It is a super-2 number, since 2×31401424412331² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31401424412292 and 31401424412301.

It is not an unprimeable number, because it can be changed into a prime (31401424410331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5233570735386 + ... + 5233570735391.

It is an arithmetic number, because the mean of its divisors is an integer number (10467141470778).

Almost surely, 2^{31401424412331} is an apocalyptic number.

31401424412331 is a deficient number, since it is larger than the sum of its proper divisors (10467141470781).

31401424412331 is a wasteful number, since it uses less digits than its factorization.

31401424412331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10467141470780.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 31401424412331 its reverse (13321442410413), we get a palindrome (44722866822744).

The spelling of 31401424412331 in words is "thirty-one trillion, four hundred one billion, four hundred twenty-four million, four hundred twelve thousand, three hundred thirty-one".