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131401653 = 3172314889
BaseRepresentation
bin1111101010100…
…00011110110101
3100011020220011220
413311100132311
5232114323103
621012220553
73153616125
oct765203665
9304226156
10131401653
116819a009
123800a759
13212b9776
1413646c85
15b808c53
hex7d507b5

131401653 has 24 divisors (see below), whose sum is σ = 192157440. Its totient is φ = 79772160.

The previous prime is 131401651. The next prime is 131401657. The reversal of 131401653 is 356104131.

It is not a de Polignac number, because 131401653 - 21 = 131401651 is a prime.

It is a super-2 number, since 2×1314016532 = 34532788822264818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131401651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24433 + ... + 29321.

It is an arithmetic number, because the mean of its divisors is an integer number (8006560).

Almost surely, 2131401653 is an apocalyptic number.

It is an amenable number.

131401653 is a deficient number, since it is larger than the sum of its proper divisors (60755787).

131401653 is a wasteful number, since it uses less digits than its factorization.

131401653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957 (or 4940 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 131401653 is about 11463.0560061443. The cubic root of 131401653 is about 508.3938358396.

Adding to 131401653 its reverse (356104131), we get a palindrome (487505784).

The spelling of 131401653 in words is "one hundred thirty-one million, four hundred one thousand, six hundred fifty-three".

Divisors: 1 3 17 31 51 93 289 527 867 1581 4889 8959 14667 26877 83113 151559 249339 454677 1412921 2576503 4238763 7729509 43800551 131401653