31001013340 has 192 divisors, whose sum is σ = 79273676160. Its totient is φ = 10048962560.

The previous prime is 31001013299. The next prime is 31001013341. The reversal of 31001013340 is 4331010013.

It is a super-2 number, since 2×31001013340² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31001013341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5745684 + ... + 5751076.

It is an arithmetic number, because the mean of its divisors is an integer number (412883730).

Almost surely, 2^31001013340 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 31001013340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39636838080).

31001013340 is an abundant number, since it is smaller than the sum of its proper divisors (48272662820).

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

31001013340 is a wasteful number, since it uses less digits than its factorization.

31001013340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512 (or 5510 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31001013340 its reverse (4331010013), we get a palindrome (35332023353).

The spelling of 31001013340 in words is "thirty-one billion, one million, thirteen thousand, three hundred forty".