31253203301240 has 64 divisors (see below), whose sum is σ = 72760382352000. Its totient is φ = 12067571496960.

The previous prime is 31253203301231. The next prime is 31253203301263. The reversal of 31253203301240 is 4210330235213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 2391296 + ... + 8259824.

It is an arithmetic number, because the mean of its divisors is an integer number (1136880974250).

Almost surely, 2^{31253203301240} is an apocalyptic number.

It is an amenable number.

31253203301240 is an abundant number, since it is smaller than the sum of its proper divisors (41507179050760).

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

31253203301240 is a wasteful number, since it uses less digits than its factorization.

31253203301240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5873160 (or 5873156 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 31253203301240 its reverse (4210330235213), we get a palindrome (35463533536453).

The spelling of 31253203301240 in words is "thirty-one trillion, two hundred fifty-three billion, two hundred three million, three hundred one thousand, two hundred forty".