1478971331 has 2 divisors, whose sum is σ = 1478971332. Its totient is φ = 1478971330.

The previous prime is 1478971309. The next prime is 1478971337. The reversal of 1478971331 is 1331798741.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1478971331 - 2¹⁸ = 1478709187 is a prime.

It is a super-2 number, since 2×1478971331² = 4374712395839823122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1478971337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739485665 + 739485666.

It is an arithmetic number, because the mean of its divisors is an integer number (739485666).

Almost surely, 2^1478971331 is an apocalyptic number.

1478971331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478971331 is an equidigital number, since it uses as much as digits as its factorization.

1478971331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 1478971331 is about 38457.3963107229. The cubic root of 1478971331 is about 1139.3397559336.

The spelling of 1478971331 in words is "one billion, four hundred seventy-eight million, nine hundred seventy-one thousand, three hundred thirty-one".