31243314102 has 256 divisors, whose sum is σ = 91708194816. Its totient is φ = 6822144000.

The previous prime is 31243314101. The next prime is 31243314127. The reversal of 31243314102 is 20141334213.

It is a happy number.

It is a super-2 number, since 2×31243314102² (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 (31243314101) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3160227 + ... + 3170097.

It is an arithmetic number, because the mean of its divisors is an integer number (358235136).

Almost surely, 2^31243314102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31243314102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45854097408).

31243314102 is an abundant number, since it is smaller than the sum of its proper divisors (60464880714).

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

31243314102 is a wasteful number, since it uses less digits than its factorization.

31243314102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31243314102 its reverse (20141334213), we get a palindrome (51384648315).

The spelling of 31243314102 in words is "thirty-one billion, two hundred forty-three million, three hundred fourteen thousand, one hundred two".