1445226431 has 16 divisors (see below), whose sum is σ = 1698195840. Its totient is φ = 1215738720.

The previous prime is 1445226407. The next prime is 1445226437. The reversal of 1445226431 is 1346225441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445226431 is a prime.

It is a super-2 number, since 2×1445226431² = 4177358873721995522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445226437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71420 + ... + 89393.

It is an arithmetic number, because the mean of its divisors is an integer number (106137240).

Almost surely, 2^1445226431 is an apocalyptic number.

1445226431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1445226431 is a deficient number, since it is larger than the sum of its proper divisors (252969409).

1445226431 is a wasteful number, since it uses less digits than its factorization.

1445226431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160886.

The product of its digits is 23040, while the sum is 32.

The square root of 1445226431 is about 38016.1338249959. The cubic root of 1445226431 is about 1130.6077684415.

The spelling of 1445226431 in words is "one billion, four hundred forty-five million, two hundred twenty-six thousand, four hundred thirty-one".