634231340 has 24 divisors (see below), whose sum is σ = 1332455712. Its totient is φ = 253584000.

The previous prime is 634231333. The next prime is 634231349. The reversal of 634231340 is 43132436.

It is a happy number.

634231340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (634231349) 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, 54737 + ... + 65303.

It is an arithmetic number, because the mean of its divisors is an integer number (55518988).

Almost surely, 2^634231340 is an apocalyptic number.

It is an amenable number.

634231340 is an abundant number, since it is smaller than the sum of its proper divisors (698224372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634231340 is a wasteful number, since it uses less digits than its factorization.

634231340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13577 (or 13575 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 634231340 is about 25183.9500475998. The cubic root of 634231340 is about 859.1768489307.

Adding to 634231340 its reverse (43132436), we get a palindrome (677363776).

The spelling of 634231340 in words is "six hundred thirty-four million, two hundred thirty-one thousand, three hundred forty".