1002345431 has 4 divisors (see below), whose sum is σ = 1003680864. Its totient is φ = 1001010000.

The previous prime is 1002345401. The next prime is 1002345457. The reversal of 1002345431 is 1345432001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002345431 - 2⁶ = 1002345367 is a prime.

It is a super-2 number, since 2×1002345431² = 2009392726093151522, 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 = 1002345397 and 1002345406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002345401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666590 + ... + 668091.

It is an arithmetic number, because the mean of its divisors is an integer number (250920216).

Almost surely, 2^1002345431 is an apocalyptic number.

1002345431 is a deficient number, since it is larger than the sum of its proper divisors (1335433).

1002345431 is an equidigital number, since it uses as much as digits as its factorization.

1002345431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335432.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1002345431 is about 31659.8394026249. The cubic root of 1002345431 is about 1000.7811999011.

Adding to 1002345431 its reverse (1345432001), we get a palindrome (2347777432).

The spelling of 1002345431 in words is "one billion, two million, three hundred forty-five thousand, four hundred thirty-one".