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4212513031 = 19751213281
BaseRepresentation
bin1111101100010101…
…1101100100000111
3101212120120211112011
43323011131210013
532111400404111
61534000435051
7206250525046
oct37305354407
911776524464
104212513031
111871943431
12996918a87
1352196a37c
142bd67255d
15199c52021
hexfb15d907

4212513031 has 4 divisors (see below), whose sum is σ = 4212746064. Its totient is φ = 4212280000.

The previous prime is 4212512989. The next prime is 4212513049. The reversal of 4212513031 is 1303152124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4212513031 - 229 = 3675642119 is a prime.

It is a super-2 number, since 2×42125130312 = 35490532072689613922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4212512993 and 4212513011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4212513131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86890 + ... + 126391.

It is an arithmetic number, because the mean of its divisors is an integer number (1053186516).

Almost surely, 24212513031 is an apocalyptic number.

4212513031 is a deficient number, since it is larger than the sum of its proper divisors (233033).

4212513031 is a wasteful number, since it uses less digits than its factorization.

4212513031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233032.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 4212513031 is about 64903.8753157313. The cubic root of 4212513031 is about 1615.0293496952.

Adding to 4212513031 its reverse (1303152124), we get a palindrome (5515665155).

The spelling of 4212513031 in words is "four billion, two hundred twelve million, five hundred thirteen thousand, thirty-one".

Divisors: 1 19751 213281 4212513031