31401431213101 has 16 divisors (see below), whose sum is σ = 32603047436800. Its totient is φ = 30211990804800.

The previous prime is 31401431213083. The next prime is 31401431213123. The reversal of 31401431213101 is 10131213410413.

It is a cyclic number.

It is not a de Polignac number, because 31401431213101 - 2¹⁷ = 31401431082029 is a prime.

It is a super-2 number, since 2×31401431213101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401434213101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704715 + ... + 8106103.

It is an arithmetic number, because the mean of its divisors is an integer number (2037690464800).

Almost surely, 2^{31401431213101} is an apocalyptic number.

31401431213101 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31401431213101 is a deficient number, since it is larger than the sum of its proper divisors (1201616223699).

31401431213101 is a wasteful number, since it uses less digits than its factorization.

31401431213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402340.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 31401431213101 its reverse (10131213410413), we get a palindrome (41532644623514).

The spelling of 31401431213101 in words is "thirty-one trillion, four hundred one billion, four hundred thirty-one million, two hundred thirteen thousand, one hundred one".