1431413021 has 2 divisors, whose sum is σ = 1431413022. Its totient is φ = 1431413020.

The previous prime is 1431413017. The next prime is 1431413047. The reversal of 1431413021 is 1203141341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1412707396 + 18705625 = 37586^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431413021 - 2² = 1431413017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1431412984 and 1431413002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1431013021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715706510 + 715706511.

It is an arithmetic number, because the mean of its divisors is an integer number (715706511).

Almost surely, 2^1431413021 is an apocalyptic number.

It is an amenable number.

1431413021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431413021 is an equidigital number, since it uses as much as digits as its factorization.

1431413021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1431413021 is about 37834.0193608874. The cubic root of 1431413021 is about 1126.9941312742.

Adding to 1431413021 its reverse (1203141341), we get a palindrome (2634554362).

The spelling of 1431413021 in words is "one billion, four hundred thirty-one million, four hundred thirteen thousand, twenty-one".