31421301401 has 6 divisors (see below), whose sum is σ = 36551309850. Its totient is φ = 26932544016.

The previous prime is 31421301347. The next prime is 31421301407. The reversal of 31421301401 is 10410312413.

It can be written as a sum of positive squares in only one way, i.e., 29730035776 + 1691265625 = 172424^2 + 41125^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31421301401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31421301407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320625476 + ... + 320625573.

It is an arithmetic number, because the mean of its divisors is an integer number (6091884975).

Almost surely, 2^31421301401 is an apocalyptic number.

It is an amenable number.

31421301401 is a deficient number, since it is larger than the sum of its proper divisors (5130008449).

31421301401 is an equidigital number, since it uses as much as digits as its factorization.

31421301401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641251063 (or 641251056 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31421301401 its reverse (10410312413), we get a palindrome (41831613814).

The spelling of 31421301401 in words is "thirty-one billion, four hundred twenty-one million, three hundred one thousand, four hundred one".