423197519137 has 2 divisors, whose sum is σ = 423197519138. Its totient is φ = 423197519136.

The previous prime is 423197519117. The next prime is 423197519149. The reversal of 423197519137 is 731915791324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378767624481 + 44429894656 = 615441^2 + 210784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423197519137 is a prime.

It is a super-2 number, since 2×423197519137² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423197519117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211598759568 + 211598759569.

It is an arithmetic number, because the mean of its divisors is an integer number (211598759569).

Almost surely, 2^423197519137 is an apocalyptic number.

It is an amenable number.

423197519137 is a deficient number, since it is larger than the sum of its proper divisors (1).

423197519137 is an equidigital number, since it uses as much as digits as its factorization.

423197519137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 52.

The spelling of 423197519137 in words is "four hundred twenty-three billion, one hundred ninety-seven million, five hundred nineteen thousand, one hundred thirty-seven".