1345554431 has 8 divisors (see below), whose sum is σ = 1449344064. Its totient is φ = 1241805600.

The previous prime is 1345554377. The next prime is 1345554433. The reversal of 1345554431 is 1344555431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345554431 is a prime.

It is a super-2 number, since 2×1345554431² = 3621033453567467522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345554391 and 1345554400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345554433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118745 + ... + 129581.

It is an arithmetic number, because the mean of its divisors is an integer number (181168008).

Almost surely, 2^1345554431 is an apocalyptic number.

1345554431 is a deficient number, since it is larger than the sum of its proper divisors (103789633).

1345554431 is a wasteful number, since it uses less digits than its factorization.

1345554431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20401.

The product of its digits is 72000, while the sum is 35.

The square root of 1345554431 is about 36681.7997241139. The cubic root of 1345554431 is about 1103.9949587457.

The spelling of 1345554431 in words is "one billion, three hundred forty-five million, five hundred fifty-four thousand, four hundred thirty-one".