31142410020 has 72 divisors (see below), whose sum is σ = 94653389376. Its totient is φ = 8288108352.

The previous prime is 31142409989. The next prime is 31142410031. The reversal of 31142410020 is 2001424113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31142409975 and 31142410002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81442 + ... + 262521.

It is an arithmetic number, because the mean of its divisors is an integer number (1314630408).

Almost surely, 2^31142410020 is an apocalyptic number.

31142410020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31142410020 is an abundant number, since it is smaller than the sum of its proper divisors (63510979356).

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

31142410020 is a wasteful number, since it uses less digits than its factorization.

31142410020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344481 (or 344476 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31142410020 its reverse (2001424113), we get a palindrome (33143834133).

The spelling of 31142410020 in words is "thirty-one billion, one hundred forty-two million, four hundred ten thousand, twenty".