20311230413 has 4 divisors (see below), whose sum is σ = 21380242560. Its totient is φ = 19242218268.

The previous prime is 20311230397. The next prime is 20311230481. The reversal of 20311230413 is 31403211302.

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.

It is a cyclic number.

It is not a de Polignac number, because 20311230413 - 2⁴ = 20311230397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311230493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534506045 + ... + 534506082.

It is an arithmetic number, because the mean of its divisors is an integer number (5345060640).

Almost surely, 2^20311230413 is an apocalyptic number.

It is an amenable number.

20311230413 is a deficient number, since it is larger than the sum of its proper divisors (1069012147).

20311230413 is a wasteful number, since it uses less digits than its factorization.

20311230413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069012146.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20311230413 its reverse (31403211302), we get a palindrome (51714441715).

The spelling of 20311230413 in words is "twenty billion, three hundred eleven million, two hundred thirty thousand, four hundred thirteen".