31141040420 has 48 divisors (see below), whose sum is σ = 77315696640. Its totient is φ = 10308756864.

The previous prime is 31141040393. The next prime is 31141040431. The reversal of 31141040420 is 2404014113.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31141040392 and 31141040401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3831044 + ... + 3839163.

It is an arithmetic number, because the mean of its divisors is an integer number (1610743680).

Almost surely, 2^31141040420 is an apocalyptic number.

It is an amenable number.

31141040420 is an abundant number, since it is smaller than the sum of its proper divisors (46174656220).

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

31141040420 is a wasteful number, since it uses less digits than its factorization.

31141040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670252 (or 7670250 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 31141040420 its reverse (2404014113), we get a palindrome (33545054533).

The spelling of 31141040420 in words is "thirty-one billion, one hundred forty-one million, forty thousand, four hundred twenty".