7131997963 has 2 divisors, whose sum is σ = 7131997964. Its totient is φ = 7131997962.

The previous prime is 7131997949. The next prime is 7131997967. The reversal of 7131997963 is 3697991317.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7131997963 - 2¹³ = 7131989771 is a prime.

It is a super-2 number, since 2×7131997963² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7131997967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3565998981 + 3565998982.

It is an arithmetic number, because the mean of its divisors is an integer number (3565998982).

Almost surely, 2^7131997963 is an apocalyptic number.

7131997963 is a deficient number, since it is larger than the sum of its proper divisors (1).

7131997963 is an equidigital number, since it uses as much as digits as its factorization.

7131997963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1928934, while the sum is 55.

The square root of 7131997963 is about 84451.1572626450. The cubic root of 7131997963 is about 1924.8803400517.

The spelling of 7131997963 in words is "seven billion, one hundred thirty-one million, nine hundred ninety-seven thousand, nine hundred sixty-three".