31423303400 has 24 divisors (see below), whose sum is σ = 73059180870. Its totient is φ = 12569321280.

The previous prime is 31423303337. The next prime is 31423303433. The reversal of 31423303400 is 430332413.

It can be written as a sum of positive squares in 3 ways, for example, as 28934690404 + 2488612996 = 170102^2 + 49886^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78558059 + ... + 78558458.

Almost surely, 2^31423303400 is an apocalyptic number.

It is an amenable number.

31423303400 is an abundant number, since it is smaller than the sum of its proper divisors (41635877470).

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

31423303400 is a wasteful number, since it uses less digits than its factorization.

31423303400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157116533 (or 157116524 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 31423303400 its reverse (430332413), we get a palindrome (31853635813).

The spelling of 31423303400 in words is "thirty-one billion, four hundred twenty-three million, three hundred three thousand, four hundred".