31532140452052 has 6 divisors (see below), whose sum is σ = 55181245791098. Its totient is φ = 15766070226024.

The previous prime is 31532140452017. The next prime is 31532140452079. The reversal of 31532140452052 is 25025404123513.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 30481507252036 + 1050633200016 = 5521006^2 + 1025004^2 .

It is a super-2 number, since 2×31532140452052² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3941517556503 + ... + 3941517556510.

Almost surely, 2^{31532140452052} is an apocalyptic number.

It is an amenable number.

31532140452052 is a deficient number, since it is larger than the sum of its proper divisors (23649105339046).

31532140452052 is a wasteful number, since it uses less digits than its factorization.

31532140452052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7883035113017 (or 7883035113015 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 31532140452052 its reverse (25025404123513), we get a palindrome (56557544575565).

The spelling of 31532140452052 in words is "thirty-one trillion, five hundred thirty-two billion, one hundred forty million, four hundred fifty-two thousand, fifty-two".