631002142 has 8 divisors (see below), whose sum is σ = 946629000. Its totient is φ = 315459144.

The previous prime is 631002137. The next prime is 631002143. The reversal of 631002142 is 241200136.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631002143) 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, 3609 + ... + 35707.

It is an arithmetic number, because the mean of its divisors is an integer number (118328625).

Almost surely, 2^631002142 is an apocalyptic number.

631002142 is a deficient number, since it is larger than the sum of its proper divisors (315626858).

631002142 is a wasteful number, since it uses less digits than its factorization.

631002142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41930.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 631002142 is about 25119.7560099616. The cubic root of 631002142 is about 857.7161967088.

Adding to 631002142 its reverse (241200136), we get a palindrome (872202278).

The spelling of 631002142 in words is "six hundred thirty-one million, two thousand, one hundred forty-two".