31414157 has 2 divisors, whose sum is σ = 31414158. Its totient is φ = 31414156.

The previous prime is 31414153. The next prime is 31414169. The reversal of 31414157 is 75141413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26481316 + 4932841 = 5146^2 + 2221^2 .

It is a cyclic number.

It is not a de Polignac number, because 31414157 - 2² = 31414153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31414153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15707078 + 15707079.

It is an arithmetic number, because the mean of its divisors is an integer number (15707079).

Almost surely, 2^31414157 is an apocalyptic number.

It is an amenable number.

31414157 is a deficient number, since it is larger than the sum of its proper divisors (1).

31414157 is an equidigital number, since it uses as much as digits as its factorization.

31414157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 31414157 is about 5604.8333605916. The cubic root of 31414157 is about 315.5308325031.

The spelling of 31414157 in words is "thirty-one million, four hundred fourteen thousand, one hundred fifty-seven".