31234031401 has 2 divisors, whose sum is σ = 31234031402. Its totient is φ = 31234031400.

The previous prime is 31234031399. The next prime is 31234031461. The reversal of 31234031401 is 10413043213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29015715600 + 2218315801 = 170340^2 + 47099^2 .

It is a cyclic number.

It is not a de Polignac number, because 31234031401 - 2¹ = 31234031399 is a prime.

Together with 31234031399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31234031461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15617015700 + 15617015701.

It is an arithmetic number, because the mean of its divisors is an integer number (15617015701).

Almost surely, 2^31234031401 is an apocalyptic number.

It is an amenable number.

31234031401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31234031401 is an equidigital number, since it uses as much as digits as its factorization.

31234031401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31234031401 its reverse (10413043213), we get a palindrome (41647074614).

The spelling of 31234031401 in words is "thirty-one billion, two hundred thirty-four million, thirty-one thousand, four hundred one".