31420110144 has 56 divisors (see below), whose sum is σ = 83480330880. Its totient is φ = 10429533184.

The previous prime is 31420110121. The next prime is 31420110157. The reversal of 31420110144 is 44101102413.

It is a super-2 number, since 2×31420110144² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31420110144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296469 + ... + 388244.

Almost surely, 2^31420110144 is an apocalyptic number.

It is an amenable number.

31420110144 is an abundant number, since it is smaller than the sum of its proper divisors (52060220736).

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

31420110144 is a wasteful number, since it uses less digits than its factorization.

31420110144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684967 (or 684957 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 31420110144 its reverse (44101102413), we get a palindrome (75521212557).

The spelling of 31420110144 in words is "thirty-one billion, four hundred twenty million, one hundred ten thousand, one hundred forty-four".