31401040313240 has 128 divisors (see below), whose sum is σ = 79490149502400. Its totient is φ = 11083592755200.

The previous prime is 31401040313197. The next prime is 31401040313311. The reversal of 31401040313240 is 4231304010413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8785322 + ... + 11831481.

Almost surely, 2^{31401040313240} is an apocalyptic number.

It is an amenable number.

31401040313240 is an abundant number, since it is smaller than the sum of its proper divisors (48089109189160).

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

31401040313240 is a wasteful number, since it uses less digits than its factorization.

31401040313240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20616957 (or 20616953 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31401040313240 its reverse (4231304010413), we get a palindrome (35632344323653).

The spelling of 31401040313240 in words is "thirty-one trillion, four hundred one billion, forty million, three hundred thirteen thousand, two hundred forty".