31402241013 has 144 divisors (see below), whose sum is σ = 54324648000. Its totient is φ = 16051875840.

The previous prime is 31402241009. The next prime is 31402241077. The reversal of 31402241013 is 31014220413.

It is not a de Polignac number, because 31402241013 - 2² = 31402241009 is a prime.

It is a super-2 number, since 2×31402241013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402241513) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 33801733 + ... + 33802661.

It is an arithmetic number, because the mean of its divisors is an integer number (377254500).

Almost surely, 2^31402241013 is an apocalyptic number.

31402241013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31402241013 is a deficient number, since it is larger than the sum of its proper divisors (22922406987).

31402241013 is a wasteful number, since it uses less digits than its factorization.

31402241013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31402241013 its reverse (31014220413), we get a palindrome (62416461426).

The spelling of 31402241013 in words is "thirty-one billion, four hundred two million, two hundred forty-one thousand, thirteen".