31442430131 has 8 divisors (see below), whose sum is σ = 35935626240. Its totient is φ = 26949589128.

The previous prime is 31442430119. The next prime is 31442430139. The reversal of 31442430131 is 13103424413.

It is a happy number.

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

It is not a de Polignac number, because 31442430131 - 2¹⁰ = 31442429107 is a prime.

It is a super-2 number, since 2×31442430131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31442430131.

It is not an unprimeable number, because it can be changed into a prime (31442430139) 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, 140420 + ... + 287406.

It is an arithmetic number, because the mean of its divisors is an integer number (4491953280).

Almost surely, 2^31442430131 is an apocalyptic number.

31442430131 is a deficient number, since it is larger than the sum of its proper divisors (4493196109).

31442430131 is a wasteful number, since it uses less digits than its factorization.

31442430131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177553.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31442430131 its reverse (13103424413), we get a palindrome (44545854544).

The spelling of 31442430131 in words is "thirty-one billion, four hundred forty-two million, four hundred thirty thousand, one hundred thirty-one".