31142518231 has 8 divisors (see below), whose sum is σ = 35145162000. Its totient is φ = 27335125440.

The previous prime is 31142518219. The next prime is 31142518241. The reversal of 31142518231 is 13281524113.

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

It is a cyclic number.

It is not a de Polignac number, because 31142518231 - 2¹¹ = 31142516183 is a prime.

It is a super-2 number, since 2×31142518231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31142518193 and 31142518202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142518241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48812406 + ... + 48813043.

It is an arithmetic number, because the mean of its divisors is an integer number (4393145250).

Almost surely, 2^31142518231 is an apocalyptic number.

31142518231 is a deficient number, since it is larger than the sum of its proper divisors (4002643769).

31142518231 is a wasteful number, since it uses less digits than its factorization.

31142518231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97625489.

The product of its digits is 5760, while the sum is 31.

The spelling of 31142518231 in words is "thirty-one billion, one hundred forty-two million, five hundred eighteen thousand, two hundred thirty-one".