631340429 has 8 divisors (see below), whose sum is σ = 642216960. Its totient is φ = 620536176.

The previous prime is 631340419. The next prime is 631340447. The reversal of 631340429 is 924043136.

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

It is a cyclic number.

It is not a de Polignac number, because 631340429 - 2¹² = 631336333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 631340395 and 631340404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631340419) 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, 302 + ... + 35535.

It is an arithmetic number, because the mean of its divisors is an integer number (80277120).

Almost surely, 2^631340429 is an apocalyptic number.

It is an amenable number.

631340429 is a deficient number, since it is larger than the sum of its proper divisors (10876531).

631340429 is a wasteful number, since it uses less digits than its factorization.

631340429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36139.

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

The square root of 631340429 is about 25126.4885927182. The cubic root of 631340429 is about 857.8694462693.

The spelling of 631340429 in words is "six hundred thirty-one million, three hundred forty thousand, four hundred twenty-nine".