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213014931 = 3157617733
BaseRepresentation
bin11001011001001…
…01100110010011
3112211211021112220
430230211212103
5414012434211
633045352123
75164411533
oct1454454623
9484737486
10213014931
11aa2722a8
125b408643
133519324c
142040d4c3
1513a7a806
hexcb25993

213014931 has 16 divisors (see below), whose sum is σ = 286682784. Its totient is φ = 140684544.

The previous prime is 213014927. The next prime is 213014933. The reversal of 213014931 is 139410312.

213014931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213014931 - 22 = 213014927 is a prime.

It is a super-2 number, since 2×2130149312 = 90750721657869522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213014933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290241 + ... + 290973.

It is an arithmetic number, because the mean of its divisors is an integer number (17917674).

Almost surely, 2213014931 is an apocalyptic number.

213014931 is a deficient number, since it is larger than the sum of its proper divisors (73667853).

213014931 is a wasteful number, since it uses less digits than its factorization.

213014931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 213014931 is about 14595.0310379937. The cubic root of 213014931 is about 597.2232161660.

The spelling of 213014931 in words is "two hundred thirteen million, fourteen thousand, nine hundred thirty-one".

Divisors: 1 3 157 471 617 733 1851 2199 96869 115081 290607 345243 452261 1356783 71004977 213014931