31142005232 has 80 divisors (see below), whose sum is σ = 67297692672. Its totient is φ = 13868977920.

The previous prime is 31142005231. The next prime is 31142005241. The reversal of 31142005232 is 23250024113.

It is a junction number, because it is equal to n+sod(n) for n = 31142005198 and 31142005207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142005231) 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, 671663 + ... + 716529.

Almost surely, 2^31142005232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31142005232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33648846336).

31142005232 is an abundant number, since it is smaller than the sum of its proper divisors (36155687440).

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

31142005232 is a wasteful number, since it uses less digits than its factorization.

31142005232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45006 (or 45000 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 31142005232 its reverse (23250024113), we get a palindrome (54392029345).

The spelling of 31142005232 in words is "thirty-one billion, one hundred forty-two million, five thousand, two hundred thirty-two".