31354420428 has 36 divisors (see below), whose sum is σ = 79289698488. Its totient is φ = 10447162560.

The previous prime is 31354420417. The next prime is 31354420459. The reversal of 31354420428 is 82402445313.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 31354420392 and 31354420401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90526 + ... + 266277.

Almost surely, 2^31354420428 is an apocalyptic number.

It is an amenable number.

31354420428 is an abundant number, since it is smaller than the sum of its proper divisors (47935278060).

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

31354420428 is a wasteful number, since it uses less digits than its factorization.

31354420428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359254 (or 359249 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 31354420428 in words is "thirty-one billion, three hundred fifty-four million, four hundred twenty thousand, four hundred twenty-eight".