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1000252131 = 31920038761
BaseRepresentation
bin111011100111101…
…010001011100011
32120201011001222020
4323213222023203
54022031032011
6243130512523
733534000654
oct7347521343
92521131866
101000252131
1147368625a
1223ab95743
1312c2c7b88
1496bb552b
155cc31006
hex3b9ea2e3

1000252131 has 16 divisors (see below), whose sum is σ = 1404723840. Its totient is φ = 631350720.

The previous prime is 1000252091. The next prime is 1000252133. The reversal of 1000252131 is 1312520001.

It is not a de Polignac number, because 1000252131 - 26 = 1000252067 is a prime.

It is a super-2 number, since 2×10002521312 = 2001008651140082322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1000252131.

It is not an unprimeable number, because it can be changed into a prime (1000252133) 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, 109791 + ... + 118551.

It is an arithmetic number, because the mean of its divisors is an integer number (87795240).

Almost surely, 21000252131 is an apocalyptic number.

1000252131 is a deficient number, since it is larger than the sum of its proper divisors (404471709).

1000252131 is a wasteful number, since it uses less digits than its factorization.

1000252131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10786.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1000252131 is about 31626.7628915765. The cubic root of 1000252131 is about 1000.0840366043.

Adding to 1000252131 its reverse (1312520001), we get a palindrome (2312772132).

The spelling of 1000252131 in words is "one billion, two hundred fifty-two thousand, one hundred thirty-one".

Divisors: 1 3 19 57 2003 6009 8761 26283 38057 114171 166459 499377 17548283 52644849 333417377 1000252131