345110021631 has 40 divisors (see below), whose sum is σ = 544920450800. Its totient is φ = 217059575040.

The previous prime is 345110021623. The next prime is 345110021647. The reversal of 345110021631 is 136120011543.

It is a happy number.

345110021631 is a `hidden beast` number, since 3 + 4 + 5 + 1 + 1 + 0 + 0 + 21 + 631 = 666.

It is not a de Polignac number, because 345110021631 - 2³ = 345110021623 is a prime.

It is a super-2 number, since 2×345110021631² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345110021595 and 345110021604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345110021131) 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 39 ways as a sum of consecutive naturals, for example, 94336 + ... + 836133.

It is an arithmetic number, because the mean of its divisors is an integer number (13623011270).

Almost surely, 2^345110021631 is an apocalyptic number.

345110021631 is a deficient number, since it is larger than the sum of its proper divisors (199810429169).

345110021631 is a wasteful number, since it uses less digits than its factorization.

345110021631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930741 (or 930732 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 345110021631 in words is "three hundred forty-five billion, one hundred ten million, twenty-one thousand, six hundred thirty-one".