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151069031 = 991152441
BaseRepresentation
bin10010000000100…
…10000101100111
3101112021002202022
421000102011213
5302133202111
622553533355
73513031331
oct1100220547
9345232668
10151069031
1178302443
124271425b
13253b4679
14160c6451
15d3e12db
hex9012167

151069031 has 4 divisors (see below), whose sum is σ = 151222464. Its totient is φ = 150915600.

The previous prime is 151069003. The next prime is 151069063. The reversal of 151069031 is 130960151.

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 151069031 - 210 = 151068007 is a prime.

It is a super-2 number, since 2×1510690312 = 45643704254557922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151066031) 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, 75230 + ... + 77211.

It is an arithmetic number, because the mean of its divisors is an integer number (37805616).

Almost surely, 2151069031 is an apocalyptic number.

151069031 is a deficient number, since it is larger than the sum of its proper divisors (153433).

151069031 is an equidigital number, since it uses as much as digits as its factorization.

151069031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153432.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 151069031 is about 12291.0142380521. The cubic root of 151069031 is about 532.5885366389.

The spelling of 151069031 in words is "one hundred fifty-one million, sixty-nine thousand, thirty-one".

Divisors: 1 991 152441 151069031