31053420 has 36 divisors (see below), whose sum is σ = 94195920. Its totient is φ = 8280864.

The previous prime is 31053409. The next prime is 31053431. The reversal of 31053420 is 2435013.

It is an interprime number because it is at equal distance from previous prime (31053409) and next prime (31053431).

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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 31053393 and 31053402.

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, 86080 + ... + 86439.

Almost surely, 2^31053420 is an apocalyptic number.

31053420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31053420 is an abundant number, since it is smaller than the sum of its proper divisors (63142500).

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

31053420 is a wasteful number, since it uses less digits than its factorization.

31053420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172534 (or 172529 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 31053420 is about 5572.5595555364. The cubic root of 31053420 is about 314.3184052968.

Adding to 31053420 its reverse (2435013), we get a palindrome (33488433).

The spelling of 31053420 in words is "thirty-one million, fifty-three thousand, four hundred twenty".