31305130401 has 4 divisors (see below), whose sum is σ = 41740173872. Its totient is φ = 20870086932.

The previous prime is 31305130397. The next prime is 31305130411. The reversal of 31305130401 is 10403150313.

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.

It is not a de Polignac number, because 31305130401 - 2² = 31305130397 is a prime.

It is a super-2 number, since 2×31305130401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31305130411) 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, 5217521731 + ... + 5217521736.

It is an arithmetic number, because the mean of its divisors is an integer number (10435043468).

Almost surely, 2^31305130401 is an apocalyptic number.

It is an amenable number.

31305130401 is a deficient number, since it is larger than the sum of its proper divisors (10435043471).

31305130401 is a wasteful number, since it uses less digits than its factorization.

31305130401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10435043470.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 31305130401 its reverse (10403150313), we get a palindrome (41708280714).

The spelling of 31305130401 in words is "thirty-one billion, three hundred five million, one hundred thirty thousand, four hundred one".