1226445231 has 24 divisors (see below), whose sum is σ = 1892047360. Its totient is φ = 704175120.

The previous prime is 1226445211. The next prime is 1226445257. The reversal of 1226445231 is 1325446221.

It is not a de Polignac number, because 1226445231 - 2²¹ = 1224348079 is a prime.

It is a super-2 number, since 2×1226445231² = 3008335809285286722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226445211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82015 + ... + 95808.

Almost surely, 2^1226445231 is an apocalyptic number.

1226445231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1226445231 is a deficient number, since it is larger than the sum of its proper divisors (665602129).

1226445231 is a wasteful number, since it uses less digits than its factorization.

1226445231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177867 (or 177856 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 1226445231 is about 35020.6400712494. The cubic root of 1226445231 is about 1070.4080986183.

The spelling of 1226445231 in words is "one billion, two hundred twenty-six million, four hundred forty-five thousand, two hundred thirty-one".