31012432101 has 48 divisors (see below), whose sum is σ = 51975089920. Its totient is φ = 17452143360.

The previous prime is 31012432097. The next prime is 31012432181. The reversal of 31012432101 is 10123421013.

It is not a de Polignac number, because 31012432101 - 2² = 31012432097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012432181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3255936 + ... + 3265446.

Almost surely, 2^31012432101 is an apocalyptic number.

It is an amenable number.

31012432101 is a deficient number, since it is larger than the sum of its proper divisors (20962657819).

31012432101 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (31012432100) it forms an eRAP, since the sums of their prime factors are consecutive (10305 and 10306).

31012432101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306 (or 10303 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31012432101 its reverse (10123421013), we get a palindrome (41135853114).

It can be divided in two parts, 310124 and 32101, that added together give a square (342225 = 585²).

The spelling of 31012432101 in words is "thirty-one billion, twelve million, four hundred thirty-two thousand, one hundred one".