34402431 has 8 divisors (see below), whose sum is σ = 52422784. Its totient is φ = 19658520.

The previous prime is 34402427. The next prime is 34402447. The reversal of 34402431 is 13420443.

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

It is not a de Polignac number, because 34402431 - 2² = 34402427 is a prime.

It is a super-2 number, since 2×34402431² = 2367054517419522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1638211 = 34402431 / (3 + 4 + 4 + 0 + 2 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34402398 and 34402407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34402631) 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, 819085 + ... + 819126.

It is an arithmetic number, because the mean of its divisors is an integer number (6552848).

Almost surely, 2^34402431 is an apocalyptic number.

34402431 is a deficient number, since it is larger than the sum of its proper divisors (18020353).

34402431 is a wasteful number, since it uses less digits than its factorization.

34402431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638221.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 34402431 is about 5865.3585568147. The cubic root of 34402431 is about 325.2343272603.

Adding to 34402431 its reverse (13420443), we get a palindrome (47822874).

The spelling of 34402431 in words is "thirty-four million, four hundred two thousand, four hundred thirty-one".