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2031430349 = 13732140601
BaseRepresentation
bin111100100010101…
…0010101011001101
312020120111100120002
41321011102223031
513130021232344
6533324334045
7101224605314
oct17105225315
95216440502
102031430349
11952764763
124883a4325
13264b303c0
14153b1b27b
15bd52044e
hex79152acd

2031430349 has 8 divisors (see below), whose sum is σ = 2217663672. Its totient is φ = 1849478400.

The previous prime is 2031430339. The next prime is 2031430397. The reversal of 2031430349 is 9430341302.

It can be written as a sum of positive squares in 4 ways, for example, as 46104100 + 1985326249 = 6790^2 + 44557^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2031430349 - 216 = 2031364813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031430339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069352 + ... + 1071249.

It is an arithmetic number, because the mean of its divisors is an integer number (277207959).

Almost surely, 22031430349 is an apocalyptic number.

It is an amenable number.

2031430349 is a deficient number, since it is larger than the sum of its proper divisors (186233323).

2031430349 is a wasteful number, since it uses less digits than its factorization.

2031430349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140687.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 2031430349 is about 45071.3916914044. The cubic root of 2031430349 is about 1266.4867351604.

The spelling of 2031430349 in words is "two billion, thirty-one million, four hundred thirty thousand, three hundred forty-nine".

Divisors: 1 13 73 949 2140601 27827813 156263873 2031430349