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314312981 is a prime number
BaseRepresentation
bin10010101111000…
…000100100010101
3210220102202100112
4102233000210111
51120431003411
651104452405
710534421243
oct2257004425
9726382315
10314312981
1115146aaa4
128931a105
135016c818
142da5b793
151c8d9b8b
hex12bc0915

314312981 has 2 divisors, whose sum is σ = 314312982. Its totient is φ = 314312980.

The previous prime is 314312969. The next prime is 314312987. The reversal of 314312981 is 189213413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228916900 + 85396081 = 15130^2 + 9241^2 .

It is a cyclic number.

It is not a de Polignac number, because 314312981 - 210 = 314311957 is a prime.

It is a super-2 number, since 2×3143129812 = 197585300050212722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (314312987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157156490 + 157156491.

It is an arithmetic number, because the mean of its divisors is an integer number (157156491).

Almost surely, 2314312981 is an apocalyptic number.

It is an amenable number.

314312981 is a deficient number, since it is larger than the sum of its proper divisors (1).

314312981 is an equidigital number, since it uses as much as digits as its factorization.

314312981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 314312981 is about 17728.8742169377. The cubic root of 314312981 is about 679.9141911619.

The spelling of 314312981 in words is "three hundred fourteen million, three hundred twelve thousand, nine hundred eighty-one".