1203355157 has 2 divisors, whose sum is σ = 1203355158. Its totient is φ = 1203355156.

The previous prime is 1203355121. The next prime is 1203355159. The reversal of 1203355157 is 7515533021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164242641 + 39112516 = 34121^2 + 6254^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203355157 - 2²⁴ = 1186577941 is a prime.

Together with 1203355159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203355159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601677578 + 601677579.

It is an arithmetic number, because the mean of its divisors is an integer number (601677579).

Almost surely, 2^1203355157 is an apocalyptic number.

It is an amenable number.

1203355157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203355157 is an equidigital number, since it uses as much as digits as its factorization.

1203355157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 1203355157 is about 34689.4098681428. The cubic root of 1203355157 is about 1063.6480326802.

Adding to 1203355157 its reverse (7515533021), we get a palindrome (8718888178).

The spelling of 1203355157 in words is "one billion, two hundred three million, three hundred fifty-five thousand, one hundred fifty-seven".