20131402453 has 2 divisors, whose sum is σ = 20131402454. Its totient is φ = 20131402452.

The previous prime is 20131402433. The next prime is 20131402469. The reversal of 20131402453 is 35420413102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19444071364 + 687331089 = 139442^2 + 26217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20131402453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131402433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065701226 + 10065701227.

It is an arithmetic number, because the mean of its divisors is an integer number (10065701227).

Almost surely, 2^20131402453 is an apocalyptic number.

It is an amenable number.

20131402453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131402453 is an equidigital number, since it uses as much as digits as its factorization.

20131402453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20131402453 its reverse (35420413102), we get a palindrome (55551815555).

The spelling of 20131402453 in words is "twenty billion, one hundred thirty-one million, four hundred two thousand, four hundred fifty-three".