1029631481 has 2 divisors, whose sum is σ = 1029631482. Its totient is φ = 1029631480.

The previous prime is 1029631453. The next prime is 1029631507. The reversal of 1029631481 is 1841369201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003875856 + 25755625 = 31684^2 + 5075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1029631481 - 2⁶ = 1029631417 is a prime.

It is a super-2 number, since 2×1029631481² = 2120281973332506722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1029631441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514815740 + 514815741.

It is an arithmetic number, because the mean of its divisors is an integer number (514815741).

Almost surely, 2^1029631481 is an apocalyptic number.

It is an amenable number.

1029631481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029631481 is an equidigital number, since it uses as much as digits as its factorization.

1029631481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1029631481 is about 32087.8712444437. The cubic root of 1029631481 is about 1009.7811769838.

The spelling of 1029631481 in words is "one billion, twenty-nine million, six hundred thirty-one thousand, four hundred eighty-one".