31403240401 has 8 divisors (see below), whose sum is σ = 33859680680. Its totient is φ = 28952629632.

The previous prime is 31403240377. The next prime is 31403240419. The reversal of 31403240401 is 10404230413.

It can be written as a sum of positive squares in 4 ways, for example, as 10702937025 + 20700303376 = 103455^2 + 143876^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31403240401 - 2⁷ = 31403240273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31403240441) 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, 1446180 + ... + 1467733.

It is an arithmetic number, because the mean of its divisors is an integer number (4232460085).

Almost surely, 2^31403240401 is an apocalyptic number.

It is an amenable number.

31403240401 is a deficient number, since it is larger than the sum of its proper divisors (2456440279).

31403240401 is a wasteful number, since it uses less digits than its factorization.

31403240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914755.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31403240401 its reverse (10404230413), we get a palindrome (41807470814).

The spelling of 31403240401 in words is "thirty-one billion, four hundred three million, two hundred forty thousand, four hundred one".