31523420034 has 12 divisors (see below), whose sum is σ = 68300743446. Its totient is φ = 10507806672.

The previous prime is 31523419981. The next prime is 31523420039. The reversal of 31523420034 is 43002432513.

31523420034 is a `hidden beast` number, since 315 + 2 + 342 + 0 + 0 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17230500225 + 14292919809 = 131265^2 + 119553^2 .

It is a super-2 number, since 2×31523420034² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31523420039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 875650539 + ... + 875650574.

Almost surely, 2^31523420034 is an apocalyptic number.

31523420034 is an abundant number, since it is smaller than the sum of its proper divisors (36777323412).

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

31523420034 is a wasteful number, since it uses less digits than its factorization.

31523420034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751301121 (or 1751301118 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 31523420034 its reverse (43002432513), we get a palindrome (74525852547).

The spelling of 31523420034 in words is "thirty-one billion, five hundred twenty-three million, four hundred twenty thousand, thirty-four".