1214103157 has 2 divisors, whose sum is σ = 1214103158. Its totient is φ = 1214103156.

The previous prime is 1214103131. The next prime is 1214103169. The reversal of 1214103157 is 7513014121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852114481 + 361988676 = 29191^2 + 19026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214103157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214103197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607051578 + 607051579.

It is an arithmetic number, because the mean of its divisors is an integer number (607051579).

Almost surely, 2^1214103157 is an apocalyptic number.

It is an amenable number.

1214103157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214103157 is an equidigital number, since it uses as much as digits as its factorization.

1214103157 is an evil number, because the sum of its binary digits is even.

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

The square root of 1214103157 is about 34843.9830817316. The cubic root of 1214103157 is about 1066.8053773496.

Adding to 1214103157 its reverse (7513014121), we get a palindrome (8727117278).

The spelling of 1214103157 in words is "one billion, two hundred fourteen million, one hundred three thousand, one hundred fifty-seven".