31300102240 has 96 divisors (see below), whose sum is σ = 81423304704. Its totient is φ = 11275415040.

The previous prime is 31300102231. The next prime is 31300102247. The reversal of 31300102240 is 4220100313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300102247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105217 + ... + 271423.

It is an arithmetic number, because the mean of its divisors is an integer number (848159424).

Almost surely, 2^31300102240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31300102240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40711652352).

31300102240 is an abundant number, since it is smaller than the sum of its proper divisors (50123202464).

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

31300102240 is a wasteful number, since it uses less digits than its factorization.

31300102240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166340 (or 166332 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31300102240 its reverse (4220100313), we get a palindrome (35520202553).

The spelling of 31300102240 in words is "thirty-one billion, three hundred million, one hundred two thousand, two hundred forty".