1531210097 has 2 divisors, whose sum is σ = 1531210098. Its totient is φ = 1531210096.

The previous prime is 1531210081. The next prime is 1531210123. The reversal of 1531210097 is 7900121351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1530296161 + 913936 = 39119^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1531210097 - 2⁴ = 1531210081 is a prime.

It is a super-2 number, since 2×1531210097² = 4689208722309498818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1531210007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765605048 + 765605049.

It is an arithmetic number, because the mean of its divisors is an integer number (765605049).

Almost surely, 2^1531210097 is an apocalyptic number.

It is an amenable number.

1531210097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531210097 is an equidigital number, since it uses as much as digits as its factorization.

1531210097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 1531210097 is about 39130.6797410932. The cubic root of 1531210097 is about 1152.5990609418.

The spelling of 1531210097 in words is "one billion, five hundred thirty-one million, two hundred ten thousand, ninety-seven".