31403782054 has 4 divisors (see below), whose sum is σ = 47105673084. Its totient is φ = 15701891026.

The previous prime is 31403782051. The next prime is 31403782061. The reversal of 31403782054 is 45028730413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31403782051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7850945512 + ... + 7850945515.

It is an arithmetic number, because the mean of its divisors is an integer number (11776418271).

Almost surely, 2^31403782054 is an apocalyptic number.

31403782054 is a deficient number, since it is larger than the sum of its proper divisors (15701891030).

31403782054 is a wasteful number, since it uses less digits than its factorization.

31403782054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15701891029.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 31403782054 in words is "thirty-one billion, four hundred three million, seven hundred eighty-two thousand, fifty-four".