1245006131 has 2 divisors, whose sum is σ = 1245006132. Its totient is φ = 1245006130.

The previous prime is 1245006121. The next prime is 1245006149. The reversal of 1245006131 is 1316005421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245006131 is a prime.

It is a super-2 number, since 2×1245006131² = 3100080532455178322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1245006097 and 1245006106.

It is not a weakly prime, because it can be changed into another prime (1245006121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622503065 + 622503066.

It is an arithmetic number, because the mean of its divisors is an integer number (622503066).

Almost surely, 2^1245006131 is an apocalyptic number.

1245006131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245006131 is an equidigital number, since it uses as much as digits as its factorization.

1245006131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1245006131 is about 35284.6444080141. The cubic root of 1245006131 is about 1075.7809017903.

The spelling of 1245006131 in words is "one billion, two hundred forty-five million, six thousand, one hundred thirty-one".