31401230312040 has 32 divisors (see below), whose sum is σ = 94203690936480. Its totient is φ = 8373661416512.

The previous prime is 31401230312029. The next prime is 31401230312069. The reversal of 31401230312040 is 4021303210413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31401230312040.

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, 130838459514 + ... + 130838459753.

It is an arithmetic number, because the mean of its divisors is an integer number (2943865341765).

Almost surely, 2^{31401230312040} is an apocalyptic number.

31401230312040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31401230312040 is an abundant number, since it is smaller than the sum of its proper divisors (62802460624440).

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

31401230312040 is a wasteful number, since it uses less digits than its factorization.

31401230312040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261676919281 (or 261676919277 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31401230312040 its reverse (4021303210413), we get a palindrome (35422533522453).

The spelling of 31401230312040 in words is "thirty-one trillion, four hundred one billion, two hundred thirty million, three hundred twelve thousand, forty".