31020300240340 has 48 divisors (see below), whose sum is σ = 66458047637520. Its totient is φ = 12158173347840.

The previous prime is 31020300240337. The next prime is 31020300240389. The reversal of 31020300240340 is 4304200302013.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4051991857936 + 26968308382404 = 2012956^2 + 5193102^2 .

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, 18212451 + ... + 19842730.

It is an arithmetic number, because the mean of its divisors is an integer number (1384542659115).

Almost surely, 2^{31020300240340} is an apocalyptic number.

It is an amenable number.

31020300240340 is an abundant number, since it is smaller than the sum of its proper divisors (35437747397180).

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

31020300240340 is a wasteful number, since it uses less digits than its factorization.

31020300240340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38056012 (or 38056010 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31020300240340 its reverse (4304200302013), we get a palindrome (35324500542353).

The spelling of 31020300240340 in words is "thirty-one trillion, twenty billion, three hundred million, two hundred forty thousand, three hundred forty".