31540010124 has 288 divisors, whose sum is σ = 93244193280. Its totient is φ = 8247579648.

The previous prime is 31540010123. The next prime is 31540010179. The reversal of 31540010124 is 42101004513.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 31540010124.

It is not an unprimeable number, because it can be changed into a prime (31540010123) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 53730559 + ... + 53731145.

It is an arithmetic number, because the mean of its divisors is an integer number (323764560).

Almost surely, 2^31540010124 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 31540010124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46622096640).

31540010124 is an abundant number, since it is smaller than the sum of its proper divisors (61704183156).

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

31540010124 is a wasteful number, since it uses less digits than its factorization.

31540010124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 31540010124 its reverse (42101004513), we get a palindrome (73641014637).

The spelling of 31540010124 in words is "thirty-one billion, five hundred forty million, ten thousand, one hundred twenty-four".