1428146431 has 2 divisors, whose sum is σ = 1428146432. Its totient is φ = 1428146430.

The previous prime is 1428146417. The next prime is 1428146443. The reversal of 1428146431 is 1346418241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1428146431 - 2⁷ = 1428146303 is a prime.

It is a super-2 number, since 2×1428146431² = 4079204456756075522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428146491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714073215 + 714073216.

It is an arithmetic number, because the mean of its divisors is an integer number (714073216).

Almost surely, 2^1428146431 is an apocalyptic number.

1428146431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428146431 is an equidigital number, since it uses as much as digits as its factorization.

1428146431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 1428146431 is about 37790.8246933035. The cubic root of 1428146431 is about 1126.1361837564.

The spelling of 1428146431 in words is "one billion, four hundred twenty-eight million, one hundred forty-six thousand, four hundred thirty-one".