31202143424013 has 16 divisors (see below), whose sum is σ = 41644720212480. Its totient is φ = 20780505146544.

The previous prime is 31202143423937. The next prime is 31202143424083. The reversal of 31202143424013 is 31042434120213.

It is not a de Polignac number, because 31202143424013 - 2²¹ = 31202141326861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31202143424083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16107718 + ... + 17940536.

It is an arithmetic number, because the mean of its divisors is an integer number (2602795013280).

Almost surely, 2^{31202143424013} is an apocalyptic number.

It is an amenable number.

31202143424013 is a deficient number, since it is larger than the sum of its proper divisors (10442576788467).

31202143424013 is a wasteful number, since it uses less digits than its factorization.

31202143424013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838528.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 31202143424013 its reverse (31042434120213), we get a palindrome (62244577544226).

The spelling of 31202143424013 in words is "thirty-one trillion, two hundred two billion, one hundred forty-three million, four hundred twenty-four thousand, thirteen".