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3131401 = 71322647
BaseRepresentation
bin1011111100100000001001
312220002110211
423330200021
51300201101
6151041121
735421310
oct13744011
95802424
103131401
111849739
1210701a1
13858400
145b7277
1541cc51
hex2fc809

3131401 has 12 divisors (see below), whose sum is σ = 3876672. Its totient is φ = 2476656.

The previous prime is 3131377. The next prime is 3131419. The reversal of 3131401 is 1041313.

It is not a de Polignac number, because 3131401 - 25 = 3131369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (323056).

Almost surely, 23131401 is an apocalyptic number.

It is an amenable number.

3131401 is a deficient number, since it is larger than the sum of its proper divisors (745271).

3131401 is a wasteful number, since it uses less digits than its factorization.

3131401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680 (or 2667 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 3131401 is about 1769.5765030086. The cubic root of 3131401 is about 146.3006408991.

Adding to 3131401 its reverse (1041313), we get a palindrome (4172714).

The spelling of 3131401 in words is "three million, one hundred thirty-one thousand, four hundred one".