731038242 has 32 divisors (see below), whose sum is σ = 1600669440. Its totient is φ = 220738320.

The previous prime is 731038237. The next prime is 731038247. The reversal of 731038242 is 242830137.

It is an interprime number because it is at equal distance from previous prime (731038237) and next prime (731038247).

It is a super-2 number, since 2×731038242² = 1068833822532901128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (731038247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892 + ... + 38247.

It is an arithmetic number, because the mean of its divisors is an integer number (50020920).

Almost surely, 2^731038242 is an apocalyptic number.

731038242 is an abundant number, since it is smaller than the sum of its proper divisors (869631198).

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

731038242 is a wasteful number, since it uses less digits than its factorization.

731038242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39438.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 731038242 is about 27037.7188756744. The cubic root of 731038242 is about 900.8380021987.

Adding to 731038242 its reverse (242830137), we get a palindrome (973868379).

The spelling of 731038242 in words is "seven hundred thirty-one million, thirty-eight thousand, two hundred forty-two".