31401017 has 2 divisors, whose sum is σ = 31401018. Its totient is φ = 31401016.

The previous prime is 31401011. The next prime is 31401037. The reversal of 31401017 is 71010413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31181056 + 219961 = 5584^2 + 469^2 .

It is an emirp because it is prime and its reverse (71010413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31401017 - 2¹² = 31396921 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31400986 and 31401004.

It is not a weakly prime, because it can be changed into another prime (31401011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700508 + 15700509.

It is an arithmetic number, because the mean of its divisors is an integer number (15700509).

Almost surely, 2^31401017 is an apocalyptic number.

It is an amenable number.

31401017 is a deficient number, since it is larger than the sum of its proper divisors (1).

31401017 is an equidigital number, since it uses as much as digits as its factorization.

31401017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 31401017 is about 5603.6610354303. The cubic root of 31401017 is about 315.4868326662.

The spelling of 31401017 in words is "thirty-one million, four hundred one thousand, seventeen".