31401353 has 2 divisors, whose sum is σ = 31401354. Its totient is φ = 31401352.

The previous prime is 31401317. The next prime is 31401373. The reversal of 31401353 is 35310413.

It is a happy number.

It is an a-pointer prime, because the next prime (31401373) can be obtained adding 31401353 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31393609 + 7744 = 5603^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 31401353 - 2⁶ = 31401289 is a prime.

It is not a weakly prime, because it can be changed into another prime (31401313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700676 + 15700677.

It is an arithmetic number, because the mean of its divisors is an integer number (15700677).

Almost surely, 2^31401353 is an apocalyptic number.

It is an amenable number.

31401353 is a deficient number, since it is larger than the sum of its proper divisors (1).

31401353 is an equidigital number, since it uses as much as digits as its factorization.

31401353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 31401353 is about 5603.6910157502. The cubic root of 31401353 is about 315.4879579291.

Adding to 31401353 its reverse (35310413), we get a palindrome (66711766).

The spelling of 31401353 in words is "thirty-one million, four hundred one thousand, three hundred fifty-three".