7201402131 has 32 divisors (see below), whose sum is σ = 12122726400. Its totient is φ = 3693624480.

The previous prime is 7201402127. The next prime is 7201402133. The reversal of 7201402131 is 1312041027.

It is not a de Polignac number, because 7201402131 - 2² = 7201402127 is a prime.

It is a super-2 number, since 2×7201402131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 7201402098 and 7201402107.

It is not an unprimeable number, because it can be changed into a prime (7201402133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179061 + ... + 215558.

It is an arithmetic number, because the mean of its divisors is an integer number (378835200).

Almost surely, 2^7201402131 is an apocalyptic number.

7201402131 is a deficient number, since it is larger than the sum of its proper divisors (4921324269).

7201402131 is a wasteful number, since it uses less digits than its factorization.

7201402131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394719.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 7201402131 is about 84861.0754763337. The cubic root of 7201402131 is about 1931.1041076122.

Adding to 7201402131 its reverse (1312041027), we get a palindrome (8513443158).

The spelling of 7201402131 in words is "seven billion, two hundred one million, four hundred two thousand, one hundred thirty-one".