7401281631 has 4 divisors (see below), whose sum is σ = 9868375512. Its totient is φ = 4934187752.

The previous prime is 7401281621. The next prime is 7401281633. The reversal of 7401281631 is 1361821047.

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 7401281631 - 2⁶ = 7401281567 is a prime.

It is a super-2 number, since 2×7401281631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7401281592 and 7401281601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7401281633) 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, 1233546936 + ... + 1233546941.

It is an arithmetic number, because the mean of its divisors is an integer number (2467093878).

Almost surely, 2^7401281631 is an apocalyptic number.

7401281631 is a deficient number, since it is larger than the sum of its proper divisors (2467093881).

7401281631 is a wasteful number, since it uses less digits than its factorization.

7401281631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467093880.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7401281631 is about 86030.7016767851. The cubic root of 7401281631 is about 1948.8076542466.

The spelling of 7401281631 in words is "seven billion, four hundred one million, two hundred eighty-one thousand, six hundred thirty-one".