31541320401 has 8 divisors (see below), whose sum is σ = 42471481344. Its totient is φ = 20819353200.

The previous prime is 31541320399. The next prime is 31541320439. The reversal of 31541320401 is 10402314513.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31541320401 - 2¹ = 31541320399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31541320471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52048081 + ... + 52048686.

It is an arithmetic number, because the mean of its divisors is an integer number (5308935168).

Almost surely, 2^31541320401 is an apocalyptic number.

It is an amenable number.

31541320401 is a deficient number, since it is larger than the sum of its proper divisors (10930160943).

31541320401 is a wasteful number, since it uses less digits than its factorization.

31541320401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104096871.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 31541320401 its reverse (10402314513), we get a palindrome (41943634914).

The spelling of 31541320401 in words is "thirty-one billion, five hundred forty-one million, three hundred twenty thousand, four hundred one".