31432326403 has 8 divisors (see below), whose sum is σ = 32743948160. Its totient is φ = 30139309440.

The previous prime is 31432326389. The next prime is 31432326427. The reversal of 31432326403 is 30462323413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31432326403 is a prime.

It is a super-2 number, since 2×31432326403² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31432326473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4647750 + ... + 4654507.

It is an arithmetic number, because the mean of its divisors is an integer number (4092993520).

Almost surely, 2^31432326403 is an apocalyptic number.

31432326403 is a deficient number, since it is larger than the sum of its proper divisors (1311621757).

31432326403 is a wasteful number, since it uses less digits than its factorization.

31432326403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9302397.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 31432326403 its reverse (30462323413), we get a palindrome (61894649816).

The spelling of 31432326403 in words is "thirty-one billion, four hundred thirty-two million, three hundred twenty-six thousand, four hundred three".