31401341220031 has 24 divisors (see below), whose sum is σ = 32157248157216. Its totient is φ = 30662426995200.

The previous prime is 31401341219971. The next prime is 31401341220149. The reversal of 31401341220031 is 13002214310413.

It is not a de Polignac number, because 31401341220031 - 2⁷ = 31401341219903 is a prime.

It is a super-2 number, since 2×31401341220031² (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 = 31401341219978 and 31401341220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401341320031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1585836331 + ... + 1585856131.

It is an arithmetic number, because the mean of its divisors is an integer number (1339885339884).

Almost surely, 2^{31401341220031} is an apocalyptic number.

31401341220031 is a deficient number, since it is larger than the sum of its proper divisors (755906937185).

31401341220031 is a wasteful number, since it uses less digits than its factorization.

31401341220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22563 (or 22510 counting only the distinct ones).

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

Adding to 31401341220031 its reverse (13002214310413), we get a palindrome (44403555530444).

The spelling of 31401341220031 in words is "thirty-one trillion, four hundred one billion, three hundred forty-one million, two hundred twenty thousand, thirty-one".