31344120401 has 4 divisors (see below), whose sum is σ = 34193585904. Its totient is φ = 28494654900.

The previous prime is 31344120361. The next prime is 31344120433. The reversal of 31344120401 is 10402144313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10402144313 = 11 ⋅945649483.

It is a cyclic number.

It is not a de Polignac number, because 31344120401 - 2²⁶ = 31277011537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31344120001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424732735 + ... + 1424732756.

It is an arithmetic number, because the mean of its divisors is an integer number (8548396476).

Almost surely, 2^31344120401 is an apocalyptic number.

It is an amenable number.

31344120401 is a deficient number, since it is larger than the sum of its proper divisors (2849465503).

31344120401 is a wasteful number, since it uses less digits than its factorization.

31344120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849465502.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31344120401 its reverse (10402144313), we get a palindrome (41746264714).

The spelling of 31344120401 in words is "thirty-one billion, three hundred forty-four million, one hundred twenty thousand, four hundred one".