31002441142 has 4 divisors (see below), whose sum is σ = 46503661716. Its totient is φ = 15501220570.

The previous prime is 31002441133. The next prime is 31002441143. The reversal of 31002441142 is 24114420013.

It is a happy number.

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

It is a super-2 number, since 2×31002441142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002441143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7750610284 + ... + 7750610287.

It is an arithmetic number, because the mean of its divisors is an integer number (11625915429).

Almost surely, 2^31002441142 is an apocalyptic number.

31002441142 is a deficient number, since it is larger than the sum of its proper divisors (15501220574).

31002441142 is a wasteful number, since it uses less digits than its factorization.

31002441142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15501220573.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31002441142 its reverse (24114420013), we get a palindrome (55116861155).

The spelling of 31002441142 in words is "thirty-one billion, two million, four hundred forty-one thousand, one hundred forty-two".