7121731404 has 12 divisors (see below), whose sum is σ = 16617373304. Its totient is φ = 2373910464.

The previous prime is 7121731363. The next prime is 7121731429. The reversal of 7121731404 is 4041371217.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7121731404² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296738797 + ... + 296738820.

Almost surely, 2^7121731404 is an apocalyptic number.

It is an amenable number.

7121731404 is an abundant number, since it is smaller than the sum of its proper divisors (9495641900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7121731404 is a wasteful number, since it uses less digits than its factorization.

7121731404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593477624 (or 593477622 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 7121731404 is about 84390.3513679141. The cubic root of 7121731404 is about 1923.9562704463.

The spelling of 7121731404 in words is "seven billion, one hundred twenty-one million, seven hundred thirty-one thousand, four hundred four".