31402443013 has 8 divisors (see below), whose sum is σ = 31480822400. Its totient is φ = 31324110048.

The previous prime is 31402443001. The next prime is 31402443031. The reversal of 31402443013 is 31034420413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31402443013 - 2³³ = 22812508421 is a prime.

It is a super-2 number, since 2×31402443013² (a number of 22 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 (31402443043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624318 + ... + 1643536.

It is an arithmetic number, because the mean of its divisors is an integer number (3935102800).

Almost surely, 2^31402443013 is an apocalyptic number.

It is an amenable number.

31402443013 is a deficient number, since it is larger than the sum of its proper divisors (78379387).

31402443013 is a wasteful number, since it uses less digits than its factorization.

31402443013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23211.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31402443013 its reverse (31034420413), we get a palindrome (62436863426).

The spelling of 31402443013 in words is "thirty-one billion, four hundred two million, four hundred forty-three thousand, thirteen".