31114487 has 2 divisors, whose sum is σ = 31114488. Its totient is φ = 31114486.

The previous prime is 31114451. The next prime is 31114493. The reversal of 31114487 is 78441113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31114487 - 2¹⁸ = 30852343 is a prime.

It is a super-2 number, since 2×31114487² = 1936222602546338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31114687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15557243 + 15557244.

It is an arithmetic number, because the mean of its divisors is an integer number (15557244).

Almost surely, 2^31114487 is an apocalyptic number.

31114487 is a deficient number, since it is larger than the sum of its proper divisors (1).

31114487 is an equidigital number, since it uses as much as digits as its factorization.

31114487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 31114487 is about 5578.0361239418. The cubic root of 31114487 is about 314.5243076173.

The spelling of 31114487 in words is "thirty-one million, one hundred fourteen thousand, four hundred eighty-seven".