31040220230140 has 48 divisors (see below), whose sum is σ = 71147730465504. Its totient is φ = 11281415072000.

The previous prime is 31040220230057. The next prime is 31040220230177. The reversal of 31040220230140 is 4103202204013.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 36691699 + ... + 37528138.

It is an arithmetic number, because the mean of its divisors is an integer number (1482244384698).

Almost surely, 2^{31040220230140} is an apocalyptic number.

It is an amenable number.

31040220230140 is an abundant number, since it is smaller than the sum of its proper divisors (40107510235364).

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

31040220230140 is a wasteful number, since it uses less digits than its factorization.

31040220230140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74221758 (or 74221756 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31040220230140 its reverse (4103202204013), we get a palindrome (35143422434153).

The spelling of 31040220230140 in words is "thirty-one trillion, forty billion, two hundred twenty million, two hundred thirty thousand, one hundred forty".