31232012101 has 2 divisors, whose sum is σ = 31232012102. Its totient is φ = 31232012100.

The previous prime is 31232012099. The next prime is 31232012107. The reversal of 31232012101 is 10121023213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24691408225 + 6540603876 = 157135^2 + 80874^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232012101 - 2¹ = 31232012099 is a prime.

Together with 31232012099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31232012107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616006050 + 15616006051.

It is an arithmetic number, because the mean of its divisors is an integer number (15616006051).

Almost surely, 2^31232012101 is an apocalyptic number.

It is an amenable number.

31232012101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232012101 is an equidigital number, since it uses as much as digits as its factorization.

31232012101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31232012101 its reverse (10121023213), we get a palindrome (41353035314).

The spelling of 31232012101 in words is "thirty-one billion, two hundred thirty-two million, twelve thousand, one hundred one".