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70150431 = 3131798729
BaseRepresentation
bin1000010111001…
…10100100011111
311220000000022010
410023212210133
5120424303211
610543322303
71511161131
oct413464437
9156000263
1070150431
113666406a
121b5b0393
13116c2140
149461051
15625a4a6
hex42e691f

70150431 has 8 divisors (see below), whose sum is σ = 100728880. Its totient is φ = 43169472.

The previous prime is 70150417. The next prime is 70150447. The reversal of 70150431 is 13405107.

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

It is not a de Polignac number, because 70150431 - 211 = 70148383 is a prime.

It is a super-2 number, since 2×701504312 = 9842165938971522, 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 = 70150398 and 70150407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70150471) 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, 899326 + ... + 899403.

It is an arithmetic number, because the mean of its divisors is an integer number (12591110).

Almost surely, 270150431 is an apocalyptic number.

70150431 is a deficient number, since it is larger than the sum of its proper divisors (30578449).

70150431 is a wasteful number, since it uses less digits than its factorization.

70150431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798745.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 70150431 is about 8375.5854123757. The cubic root of 70150431 is about 412.4235421194.

Adding to 70150431 its reverse (13405107), we get a palindrome (83555538).

The spelling of 70150431 in words is "seventy million, one hundred fifty thousand, four hundred thirty-one".

Divisors: 1 3 13 39 1798729 5396187 23383477 70150431