31240142012310 has 128 divisors (see below), whose sum is σ = 93509283216384. Its totient is φ = 6489215938560.

The previous prime is 31240142012309. The next prime is 31240142012327. The reversal of 31240142012310 is 1321024104213.

It is a super-2 number, since 2×31240142012310² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4357954 + ... + 9026186.

It is an arithmetic number, because the mean of its divisors is an integer number (730541275128).

Almost surely, 2^{31240142012310} is an apocalyptic number.

31240142012310 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31240142012310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46754641608192).

31240142012310 is an abundant number, since it is smaller than the sum of its proper divisors (62269141204074).

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

31240142012310 is a wasteful number, since it uses less digits than its factorization.

31240142012310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671158.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 31240142012310 its reverse (1321024104213), we get a palindrome (32561166116523).

The spelling of 31240142012310 in words is "thirty-one trillion, two hundred forty billion, one hundred forty-two million, twelve thousand, three hundred ten".