320131400351 has 16 divisors (see below), whose sum is σ = 381806659584. Its totient is φ = 262443882624.

The previous prime is 320131400339. The next prime is 320131400383. The reversal of 320131400351 is 153004131023.

It is not a de Polignac number, because 320131400351 - 2¹⁰ = 320131399327 is a prime.

It is a super-2 number, since 2×320131400351² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131400321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1787450 + ... + 1958376.

It is an arithmetic number, because the mean of its divisors is an integer number (23862916224).

Almost surely, 2^320131400351 is an apocalyptic number.

320131400351 is a deficient number, since it is larger than the sum of its proper divisors (61675259233).

320131400351 is a wasteful number, since it uses less digits than its factorization.

320131400351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182590.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 320131400351 its reverse (153004131023), we get a palindrome (473135531374).

The spelling of 320131400351 in words is "three hundred twenty billion, one hundred thirty-one million, four hundred thousand, three hundred fifty-one".