1267980031 has 2 divisors, whose sum is σ = 1267980032. Its totient is φ = 1267980030.

The previous prime is 1267979971. The next prime is 1267980083. The reversal of 1267980031 is 1300897621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1267980031 is a prime.

It is a super-2 number, since 2×1267980031² = 3215546718029521922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1267981031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633990015 + 633990016.

It is an arithmetic number, because the mean of its divisors is an integer number (633990016).

Almost surely, 2^1267980031 is an apocalyptic number.

1267980031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267980031 is an equidigital number, since it uses as much as digits as its factorization.

1267980031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1267980031 is about 35608.7072357310. The cubic root of 1267980031 is about 1082.3576839825.

The spelling of 1267980031 in words is "one billion, two hundred sixty-seven million, nine hundred eighty thousand, thirty-one".