Search a number
-
+
12010232031 = 371024755813
BaseRepresentation
bin10110010111101110…
…11001100011011111
31011000000101000001120
423023313121203133
5144044104411111
65303432542023
7603424200510
oct131367314337
934000330046
1012010232031
1151035100a6
1223b2251913
131195307b95
1481d122a07
154a45e2406
hex2cbdd98df

12010232031 has 16 divisors (see below), whose sum is σ = 18303419904. Its totient is φ = 6862197024.

The previous prime is 12010231993. The next prime is 12010232077. The reversal of 12010232031 is 13023201021.

It is not a de Polignac number, because 12010232031 - 210 = 12010231007 is a prime.

It is a super-2 number, since 2×120102320312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12010232031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010230031) 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, 187281 + ... + 243093.

It is an arithmetic number, because the mean of its divisors is an integer number (1143963744).

Almost surely, 212010232031 is an apocalyptic number.

12010232031 is a deficient number, since it is larger than the sum of its proper divisors (6293187873).

12010232031 is a wasteful number, since it uses less digits than its factorization.

12010232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66070.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12010232031 its reverse (13023201021), we get a palindrome (25033433052).

The spelling of 12010232031 in words is "twelve billion, ten million, two hundred thirty-two thousand, thirty-one".

Divisors: 1 3 7 21 10247 30741 55813 71729 167439 215187 390691 1172073 571915811 1715747433 4003410677 12010232031