127228531 has 2 divisors, whose sum is σ = 127228532. Its totient is φ = 127228530.

The previous prime is 127228501. The next prime is 127228537. The reversal of 127228531 is 135822721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127228531 - 2⁷ = 127228403 is a prime.

It is a super-2 number, since 2×127228531² = 32374198200835922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127228493 and 127228502.

It is not a weakly prime, because it can be changed into another prime (127228537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63614265 + 63614266.

It is an arithmetic number, because the mean of its divisors is an integer number (63614266).

Almost surely, 2^127228531 is an apocalyptic number.

127228531 is a deficient number, since it is larger than the sum of its proper divisors (1).

127228531 is an equidigital number, since it uses as much as digits as its factorization.

127228531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 127228531 is about 11279.5625358433. The cubic root of 127228531 is about 502.9538893764.

The spelling of 127228531 in words is "one hundred twenty-seven million, two hundred twenty-eight thousand, five hundred thirty-one".