1021314157 has 2 divisors, whose sum is σ = 1021314158. Its totient is φ = 1021314156.

The previous prime is 1021314139. The next prime is 1021314167. The reversal of 1021314157 is 7514131201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564252516 + 457061641 = 23754^2 + 21379^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021314157 - 2⁷ = 1021314029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021314167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510657078 + 510657079.

It is an arithmetic number, because the mean of its divisors is an integer number (510657079).

Almost surely, 2^1021314157 is an apocalyptic number.

It is an amenable number.

1021314157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021314157 is an equidigital number, since it uses as much as digits as its factorization.

1021314157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1021314157 is about 31958.0061486946. The cubic root of 1021314157 is about 1007.0548313140.

Adding to 1021314157 its reverse (7514131201), we get a palindrome (8535445358).

It can be divided in two parts, 10213 and 14157, that multiplied together give a palindrome (144585441).

The spelling of 1021314157 in words is "one billion, twenty-one million, three hundred fourteen thousand, one hundred fifty-seven".