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313123394 = 21087144031
BaseRepresentation
bin10010101010011…
…110001001000010
3210211012022112202
4102222132021002
51120124422034
651023153202
710521335123
oct2252361102
9724168482
10313123394
11150828271
1288a45802
134cb4421c
142d82c04a
151c75247e
hex12a9e242

313123394 has 8 divisors (see below), whose sum is σ = 470120448. Its totient is φ = 156416580.

The previous prime is 313123333. The next prime is 313123441. The reversal of 313123394 is 493321313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×3131233944 (a number of 35 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69842 + ... + 74189.

It is an arithmetic number, because the mean of its divisors is an integer number (58765056).

Almost surely, 2313123394 is an apocalyptic number.

313123394 is a deficient number, since it is larger than the sum of its proper divisors (156997054).

313123394 is a wasteful number, since it uses less digits than its factorization.

313123394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145120.

The product of its digits is 5832, while the sum is 29.

The square root of 313123394 is about 17695.2929899451. The cubic root of 313123394 is about 679.0553448684.

The spelling of 313123394 in words is "three hundred thirteen million, one hundred twenty-three thousand, three hundred ninety-four".

Divisors: 1 2 1087 2174 144031 288062 156561697 313123394