31032340100 has 18 divisors (see below), whose sum is σ = 67340178234. Its totient is φ = 12412936000.

The previous prime is 31032340057. The next prime is 31032340109. The reversal of 31032340100 is 104323013.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2080636996 + 28951703104 = 45614^2 + 170152^2 .

It is a super-2 number, since 2×31032340100² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31032340109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155161601 + ... + 155161800.

It is an arithmetic number, because the mean of its divisors is an integer number (3741121013).

Almost surely, 2^31032340100 is an apocalyptic number.

It is an amenable number.

31032340100 is an abundant number, since it is smaller than the sum of its proper divisors (36307838134).

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

31032340100 is a wasteful number, since it uses less digits than its factorization.

31032340100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310323415 (or 310323408 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31032340100 its reverse (104323013), we get a palindrome (31136663113).

The spelling of 31032340100 in words is "thirty-one billion, thirty-two million, three hundred forty thousand, one hundred".