1226445131 has 2 divisors, whose sum is σ = 1226445132. Its totient is φ = 1226445130.

The previous prime is 1226445113. The next prime is 1226445149. The reversal of 1226445131 is 1315446221.

Together with previous prime (1226445113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (1226445113) and next prime (1226445149).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226445131 is a prime.

It is a super-2 number, since 2×1226445131² = 3008335318707214322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1226445094 and 1226445103.

It is not a weakly prime, because it can be changed into another prime (1226445431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613222565 + 613222566.

It is an arithmetic number, because the mean of its divisors is an integer number (613222566).

Almost surely, 2^1226445131 is an apocalyptic number.

1226445131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226445131 is an equidigital number, since it uses as much as digits as its factorization.

1226445131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 1226445131 is about 35020.6386435199. The cubic root of 1226445131 is about 1070.4080695259.

The spelling of 1226445131 in words is "one billion, two hundred twenty-six million, four hundred forty-five thousand, one hundred thirty-one".