63131942 has 4 divisors (see below), whose sum is σ = 94697916. Its totient is φ = 31565970.

The previous prime is 63131921. The next prime is 63131963. The reversal of 63131942 is 24913136.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (63131921) and next prime (63131963).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15782984 + ... + 15782987.

It is an arithmetic number, because the mean of its divisors is an integer number (23674479).

Almost surely, 2^63131942 is an apocalyptic number.

63131942 is a deficient number, since it is larger than the sum of its proper divisors (31565974).

63131942 is a wasteful number, since it uses less digits than its factorization.

63131942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31565973.

The product of its digits is 3888, while the sum is 29.

The square root of 63131942 is about 7945.5611507306. The cubic root of 63131942 is about 398.1833073944.

The spelling of 63131942 in words is "sixty-three million, one hundred thirty-one thousand, nine hundred forty-two".