31020102413 has 4 divisors (see below), whose sum is σ = 31680104640. Its totient is φ = 30360100188.

The previous prime is 31020102397. The next prime is 31020102457. The reversal of 31020102413 is 31420102013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31420102013 = 1279 ⋅24566147.

It is a cyclic number.

It is not a de Polignac number, because 31020102413 - 2⁴ = 31020102397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31020102391 and 31020102400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020102493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330001043 + ... + 330001136.

It is an arithmetic number, because the mean of its divisors is an integer number (7920026160).

Almost surely, 2^31020102413 is an apocalyptic number.

It is an amenable number.

31020102413 is a deficient number, since it is larger than the sum of its proper divisors (660002227).

31020102413 is an equidigital number, since it uses as much as digits as its factorization.

31020102413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660002226.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31020102413 its reverse (31420102013), we get a palindrome (62440204426).

The spelling of 31020102413 in words is "thirty-one billion, twenty million, one hundred two thousand, four hundred thirteen".