1150031821 has 2 divisors, whose sum is σ = 1150031822. Its totient is φ = 1150031820.

The previous prime is 1150031803. The next prime is 1150031833. The reversal of 1150031821 is 1281300511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 674181225 + 475850596 = 25965^2 + 21814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150031821 - 2²³ = 1141643213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1150031792 and 1150031801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150001821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575015910 + 575015911.

It is an arithmetic number, because the mean of its divisors is an integer number (575015911).

Almost surely, 2^1150031821 is an apocalyptic number.

It is an amenable number.

1150031821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150031821 is an equidigital number, since it uses as much as digits as its factorization.

1150031821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1150031821 is about 33912.1190874295. The cubic root of 1150031821 is about 1047.6992164243.

The spelling of 1150031821 in words is "one billion, one hundred fifty million, thirty-one thousand, eight hundred twenty-one".