31301223010420 has 24 divisors (see below), whose sum is σ = 71708256351648. Its totient is φ = 11382262912800.

The previous prime is 31301223010373. The next prime is 31301223010439. The reversal of 31301223010420 is 2401032210313.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31301223010391 and 31301223010400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71139142986 + ... + 71139143425.

It is an arithmetic number, because the mean of its divisors is an integer number (2987844014652).

Almost surely, 2^{31301223010420} is an apocalyptic number.

It is an amenable number.

31301223010420 is an abundant number, since it is smaller than the sum of its proper divisors (40407033341228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31301223010420 is a wasteful number, since it uses less digits than its factorization.

31301223010420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142278286431 (or 142278286429 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31301223010420 its reverse (2401032210313), we get a palindrome (33702255220733).

The spelling of 31301223010420 in words is "thirty-one trillion, three hundred one billion, two hundred twenty-three million, ten thousand, four hundred twenty".