1631457620343 has 20 divisors (see below), whose sum is σ = 2437156276368. Its totient is φ = 1087620307200.

The previous prime is 1631457620339. The next prime is 1631457620383. The reversal of 1631457620343 is 3430267541361.

1631457620343 is a `hidden beast` number, since 1 + 6 + 3 + 14 + 5 + 7 + 620 + 3 + 4 + 3 = 666.

It is not a de Polignac number, because 1631457620343 - 2² = 1631457620339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631457620323) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6222030 + ... + 6478932.

Almost surely, 2^{1631457620343} is an apocalyptic number.

1631457620343 is a deficient number, since it is larger than the sum of its proper divisors (805698656025).

1631457620343 is an equidigital number, since it uses as much as digits as its factorization.

1631457620343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335316 (or 335307 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 1631457620343 in words is "one trillion, six hundred thirty-one billion, four hundred fifty-seven million, six hundred twenty thousand, three hundred forty-three".