634429031 has 2 divisors, whose sum is σ = 634429032. Its totient is φ = 634429030.

The previous prime is 634429007. The next prime is 634429111. The reversal of 634429031 is 130924436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634429031 - 2¹⁰ = 634428007 is a prime.

It is a super-2 number, since 2×634429031² = 805000390751197922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634449031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317214515 + 317214516.

It is an arithmetic number, because the mean of its divisors is an integer number (317214516).

Almost surely, 2^634429031 is an apocalyptic number.

634429031 is a deficient number, since it is larger than the sum of its proper divisors (1).

634429031 is an equidigital number, since it uses as much as digits as its factorization.

634429031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 634429031 is about 25187.8746820767. The cubic root of 634429031 is about 859.2661086246.

The spelling of 634429031 in words is "six hundred thirty-four million, four hundred twenty-nine thousand, thirty-one".