31142252534 has 16 divisors (see below), whose sum is σ = 47329649136. Its totient is φ = 15366708000.

The previous prime is 31142252509. The next prime is 31142252567. The reversal of 31142252534 is 43525224113.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31142252534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189077 + ... + 313104.

It is an arithmetic number, because the mean of its divisors is an integer number (2958103071).

Almost surely, 2^31142252534 is an apocalyptic number.

31142252534 is a deficient number, since it is larger than the sum of its proper divisors (16187396602).

31142252534 is a wasteful number, since it uses less digits than its factorization.

31142252534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502591.

The product of its digits is 28800, while the sum is 32.

Adding to 31142252534 its reverse (43525224113), we get a palindrome (74667476647).

The spelling of 31142252534 in words is "thirty-one billion, one hundred forty-two million, two hundred fifty-two thousand, five hundred thirty-four".